家常小实验

丫丫妈妈 · 发表于 2005-8-30 16:08:36

<table cellspacing="0" cellpadding="0" width="100%" align="center" border="0"><tr><td align="center">蜡烛抽水机</td></tr><tr><td align="center" height="10">[ net2004年1月14日，阅读人数<font color="#000080">5147人 ]</td></tr><tr><td height="3"></td></tr><tr><td align="right" height="25"></td></tr><tr><td height="10"></td></tr><tr><td><table cellspacing="0" cellpadding="0" width="95%" align="center" border="0"><tr><td>抽水机的原理是使一边空气压力减少，压力大的一边的水自然要流过来。【实验器材】　　玻璃杯、蜡烛、比玻璃杯口稍大的硬纸片、塑料管、凡士林少许、火柴、水半杯【实验过程】　　先将塑料管折成门框形，一头穿过硬纸片。再把两只玻璃杯一左一右放在桌子上。将蜡烛点然后固定在左边玻璃杯底部，将水注入右边玻璃杯中。在放蜡烛的杯子口涂一些凡士林，再用穿有塑料管的硬纸片盖上，并使塑料管的另一头没入右边杯子水中。看右边杯子中的水位有何变化。【实验结果】　　水从右边流入左边的杯子中【结果说明】　　蜡烛燃烧用去了左边杯中的氧气，瓶中气压降低，右边杯压力使水向左杯流动，直到两杯水面承受的压力相等为止。到那时左杯水面高于右杯水面。</td></tr></table></td></tr></table>

小猪笨笨 · 发表于 2005-8-30 16:24:02

很精彩，谢谢分享！

丫丫妈妈 · 发表于 2005-8-30 21:30:43

<table height="459" cellpadding="18" width="75%" border="0"><tr><td width="100%" height="91"><p class="MsoNormal" align="center"><span>小实验</span><p class="MsoNormal" align="center"></td></tr><tr><td width="100%" height="242"><span></span><span></span> <p class="MsoNormal"><span><font color="#cc6600"> <font color="#008000">清脆的铃声响了，王老师迈着有力的步伐走上讲台。她从精致的布包里拿出一支削尖了的铅笔，又拿出两个半只的鸡蛋壳。她笑容满面地对我们说：“孩子们，今天我做一个科学小实验——‘两个半只的鸡蛋壳’。”我心里想：这两个半只的鸡蛋壳和一支铅笔到底能做出什么有趣的事。我可要看个明白。</span><p class="MsoNormal"><font color="#008000"><span> 实验开始了。王老师把一个半只的鸡蛋壳口朝上轻轻地放在讲桌上，又把另一个鸡蛋壳口朝下，也放在了讲桌上。然后，拿起削尖了的铅笔，笔尖朝下，对着口朝上的鸡蛋壳，垂直往下戳。“一、二、三……”数到四，王老师把鸡蛋壳拿起来，我睁大眼睛一看，鸡蛋的底部出现了一只可爱的“小眼睛”。王老师又拿出铅笔，笔尖也朝下，对着那只口朝下的鸡蛋壳，“一、二、三、四、五……”一直数到33<span>，在鸡蛋壳的底部才出现了一只“小眼睛”。我们很好奇，有一个同学举起小手问：“老师，为什么口朝上的鸡蛋壳容易戳破，而口朝下的鸡蛋壳不容易戳破呢？”大家讲了起来，有的摆脑袋，有的把手放在头上画圈圈，还有的在认真思考，但王老师还是慢条斯理地摇头。最后，还是王老师说了出来：“这是力学知识，口朝上的鸡蛋壳成凹形容易戳破，而口朝下</span></span><span><font color="#008000"><img src="http://majin.u111.net/mp/mptu/mp08.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> </span><font color="#008000"><span>的鸡蛋壳成拱形，不容易戳破。”这下子我们才恍然大悟。</span><p class="MsoNormal"><span><font color="#008000"> 原来世界上有许多拱形的事物，比如：拱桥、安全帽、雨伞……都是利用受力分散的原理。等我长大了，要利用这一原理，发明更多的拱形建筑和物件，给我们的生活增添方便。</span></td></tr></table>

丫丫妈妈 · 发表于 2005-8-30 21:33:43

<font color="#330099" size="3">科学小实验……声音找不到了 <img src="http://www.hnast.org/img/topnew.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <img src="http://www.hnast.org/img/line4.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <img src="http://www.hnast.org/img/jiantou.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <table cellspacing="0" cellpadding="0" width="600" border="0"><tr><td valign="top" align="center" width="600" colspan="2"><p align="left"><img src="http://www.hnast.org/img/sense16.jpg" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> 　　为什么我们有两只耳朵而不是一只呢？捂住一只耳朵，并试着准确地说出声音是从哪个方向来的，你将很快知道我们为什么有两只耳朵。<div align="center"><table cellspacing="0" cellpadding="2" width="600" border="0"><tr><td valign="top" width="225">1.用布遮住朋友的眼睛，然后请你的朋友用手捂住一只耳朵。<img src="http://www.hnast.org/img/sense17.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> </td><td valign="top" width="212">　<p align="right"><font face="Arial">2.在安静的房间里转几圈，两支铅笔尖碰在一起，请你的朋友指出你所在的方向，你的朋友几乎总是指错。<font color="#99cc33">……</td><td valign="bottom" width="242"><img src="http://www.hnast.org/img/sense18.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> </td></tr><tr><td width="225"><p align="right"><font face="Arial">3.请你的朋友用两只耳朵听，并反复试验。现在你的朋友每次都能准确地指出声音来自何方？</td></tr></table></div></td></tr></table>

丫丫妈妈 · 发表于 2005-8-30 21:34:52

<font color="#330099" size="3">科学小实验……气球抓物 <img src="http://www.hnast.org/img/topnew.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <img src="http://www.hnast.org/img/line4.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <img src="http://www.hnast.org/img/jiantou.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <table cellspacing="0" cellpadding="0" width="600" border="0"><tr><td valign="top" align="center" width="760" colspan="2"><p align="left"><img src="http://www.hnast.org/img/hotcold06-0.jpg" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> 　　用气球抓住瓶子！通过使空气膨胀然后收缩，热水和冷水可以变这种魔术。<p align="left">　<p align="left">　<div align="center"><table height="558" cellspacing="0" width="500" border="0"><tr><td valign="bottom" align="center" height="249"><img src="http://www.hnast.org/img/hotcold06-1.jpg" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> </td><td valign="bottom" align="center" height="249"><img src="http://www.hnast.org/img/hotcold06-2.jpg" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> </td></tr><tr><td valign="top" align="center" height="38">　1.在塑料杯里倒一些热水。　　热水使杯中的空气膨胀。</td><td valign="top" align="center" height="38">　2.吹起气球，在气球表面倒些冷水。</td></tr><tr><td valign="bottom" align="center" height="236"><img src="http://www.hnast.org/img/hotcold06-3.jpg" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> </td><td valign="bottom" align="center" height="236"><img src="http://www.hnast.org/img/hotcold06-4.jpg" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> </td></tr><tr><td valign="top" align="center" height="27">3.将杯里的水倒出，然后将　杯子紧紧贴在气球下部。凉气球冷却了杯中的空气，使之收缩。</td><td valign="top" align="center" height="27">4.一分钟后，提起气球，气球会　抓着杯子，将它一起提起来！外面的空气挤压杯子，使它贴在气球上。 </td></tr></table></div></td></tr></table>

丫丫妈妈 · 发表于 2005-8-30 21:35:38

<font color="#330099" size="3">科学小实验……赛船 <img src="http://www.hnast.org/img/topnew.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <img src="http://www.hnast.org/img/line4.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <img src="http://www.hnast.org/img/jiantou.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <table cellspacing="0" cellpadding="0" width="600" border="0"><tr><td valign="top" align="center" width="760" colspan="2"><p align="left"><img src="http://www.hnast.org/img/citi05-0.jpg" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> 　　这是由两个人参与的磁力船比赛，从中你可以看到磁力是可以穿过水的，也可以穿过某些固体材料以及空气。<img src="http://www.hnast.org/img/citi05-1.jpg" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> 　　　　　1.把图钉按在每个小船上。<p align="left">　 <p align="right">　3.把浅底盘子横放于两本书之间，在里面倒上水。<font color="#99cc33">……………<img src="http://www.hnast.org/img/citi05-2.jpg" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <img src="http://www.hnast.org/img/citi05-3.jpg" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <p align="left">2.用纸为小船做一个帆，　再把它用大头针固定在　小船上。图钉按在小船　的底面，帆固定在小船　的上面。 <p align="left">　 </td></tr></table>

丫丫妈妈 · 发表于 2005-8-30 21:36:09

<font color="#330099" size="3">科学小实验……趣味钓鱼 <img src="http://www.hnast.org/img/topnew.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <img src="http://www.hnast.org/img/line4.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <img src="http://www.hnast.org/img/jiantou.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <table cellspacing="0" cellpadding="0" width="600" border="0"><tr><td valign="top" align="center" width="758" colspan="2"><p align="left"><img src="http://www.hnast.org/img/exp06.jpg" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> 　　用磁铁钓鱼是一件很有趣的事。先做一个钓鱼竿和一些鱼，然后用它来演示磁铁是怎样吸引一些物体的。如果你做两根钓鱼竿，就可以和朋友进行比赛，看谁钓的鱼多。<img src="http://www.hnast.org/img/exp07.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> 　　　　　 <font face="Arial">1.在纸上画出鱼的形状，然后用剪刀把它剪下来。 <p align="left">　 <p align="left"><img src="http://www.hnast.org/img/exp08.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> 　<font face="Arial">2.把回形针别到每条鱼上。<img src="http://www.hnast.org/img/exp09.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <p align="right">　<font face="Arial">3.轻轻地将鱼放到盆里，如果鱼沉下去也没关系。小心地让这鱼都浮在水面上。 <p align="left">　　　<img src="http://www.hnast.org/img/exp10.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> 　<font face="Arial">4.把细绳的一端系到磁铁上，要系结实。<img src="http://www.hnast.org/img/exp12.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <p align="left">　　 <p align="left">　　　　　<img src="http://www.hnast.org/img/exp11.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <font face="Arial">5.把细绳的另一端系到木棍上，并用胶带粘住，以免绳子在棍子上打滑，这样磁性钓鱼竿就做好了。 <p align="right"><font face="Arial">6.拿着钓鱼竿到水盆边，把它慢慢地放到水面上，磁铁就把鱼钓上来了。铁做的回形针被吸到磁铁上。磁铁也可以进入水中，因此你也可以钓到沉到盆底的鱼。 </td></tr></table>

丫丫妈妈 · 发表于 2005-8-30 21:37:33

<table cellspacing="0" cellpadding="0" width="778" border="0"><tr><td><table cellspacing="0" cellpadding="0" border="0"><tr><td valign="top" width="628"><font face="Verdana, Arial, Helvetica, sans-serif" size="3"><font color="#330099">科学小实验……会吹泡的瓶子 <img src="http://www.hnast.org/img/topnew.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <img src="http://www.hnast.org/img/line4.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <img src="http://www.hnast.org/img/jiantou.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <table cellspacing="0" cellpadding="0" width="600" border="0"><tr><td valign="top" align="center" width="760" colspan="2"><p align="left"><img src="http://www.hnast.org/img/hotcold05-0.jpg" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> 　　通过加热将瓶中的空气挤出，然后再通过冷却将水吸到瓶子里。这样，你就会看到物体的热胀冷缩。<p align="left"><img src="http://www.hnast.org/img/hotcold05-1.jpg" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <p align="left">　<p align="left">　1.将吸管放入瓶口，用橡皮泥密封。<p align="left">　<p align="left"><img src="http://www.hnast.org/img/hotcold05-2.jpg" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <p align="left">　<p align="left">　2.将其他吸管与第一支吸管相接，形成一个长管。<p align="left"><img src="http://www.hnast.org/img/hotcold05-3.jpg" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <p align="left">　<p align="right">3.用一点色素染一下玻璃杯中的水。<p align="left">　<p align="left"><img src="http://www.hnast.org/img/hotcold05-4.jpg" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <p align="left">　<p align="left">　<p align="left">　4.将瓶子置入大盘子，弯曲吸管，使它探入玻璃杯中。<p align="left">　<p align="left">　<p align="right"><img src="http://www.hnast.org/img/hotcold05-5.jpg" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <p align="right">5.向瓶壁浇热水，吸管会排出大大的气泡。<font color="#99cc33">…………<p align="left"><img src="http://www.hnast.org/img/hotcold05-6.jpg" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <p align="left">　　　　6.再向瓶壁浇冷水。染色的水会经吸管吸入瓶中。</td></tr></table></td></tr></table></td></tr><tr><td colspan="4"><img src="http://www.hnast.org/img/line.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> </td></tr></table>

丫丫妈妈 · 发表于 2005-8-30 21:37:57

<font color="#330099" size="3">科学小实验……猫和老鼠 <img src="http://www.hnast.org/img/topnew.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <img src="http://www.hnast.org/img/line4.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <img src="http://www.hnast.org/img/jiantou.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <table cellspacing="0" cellpadding="0" width="600" border="0"><tr><td valign="top" align="center" width="600" colspan="2"><p align="left"><img src="http://www.hnast.org/img/sense08-0.jpg" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> 　　阻挡住猫捉老鼠，并使它们中的一个消失！这真像变魔术一样。人的每一只眼睛都有一个盲点，如果图像落到盲点上，你就看不到图像了。<p align="left"><img src="http://www.hnast.org/img/sense08-1.jpg" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> 1.在纸上做两个相距8厘米的记号。<p align="left">　<p align="left"><img src="http://www.hnast.org/img/sense08-2.jpg" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <p align="left">　<p align="left">　<p align="right">2.在一个记号处画一只猫，在另一记号处画一只老鼠。<font color="#99cc33">…<p align="left">　<p align="left"><img src="http://www.hnast.org/img/sense08-3.jpg" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <p align="left">　<p align="left">3.用一只手捂住左眼，当你拿着纸慢慢朝自己移动时，　目不转眼地盯住猫，老鼠就会突然消失。然后捂住　右眼，试着盯住老鼠，猫就会突然消失。</td></tr></table>

丫丫妈妈 · 发表于 2005-8-30 21:38:37

<font color="#330099" size="3">科学小实验……藏起来的空气 <img src="http://www.hnast.org/img/topnew.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <img src="http://www.hnast.org/img/line4.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <img src="http://www.hnast.org/img/jiantou.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <table cellspacing="0" cellpadding="0" width="600" border="0"><tr><td valign="top" align="center" width="600" colspan="2"><p align="left"><img src="http://www.hnast.org/img/air03-0.jpg" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> 　　为什么羊毛衣物穿着暖和？因为有空气藏在里面，空气使你身体的热散不出去。就好像你被一层暖和的空气毯包裹住一样。你可以发现如手套一类的羊毛衣物里的藏着的空气。<p align="left">　<p align="left">　<div align="center"><table cellspacing="0" width="650" border="0"><tr><td valign="top" align="center" width="220"><img src="http://www.hnast.org/img/air03-1.jpg" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <p align="left">1.叠起手套，使你的手指可以握住它。　确定手套是干的。</td><td valign="bottom" align="center" width="410"><img src="http://www.hnast.org/img/air03-2.jpg" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> </td><tr><td valign="top" align="center" width="220"></td><td valign="top" align="center" width="416">2.将手套浸入水里并挤压，空气就冒着泡从羊毛里出来了！细小的羊毛线缠成一团，将空气挡在手套里。空气阻止热离开你的皮肤，因此你一直感到很暖和。 </td></tr></tr></table></div></td></tr></table>

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