雷电是怎样形成的？
能否用图形象的表述一下，谢谢！ <p> 雷电是一种大气中放电现象，产生于积雨中，积雨云在形成过程中，某些云团带正电荷，某些云团带负电荷。它们对大地的静电感应，使地面或建（构）筑物表面产生异性电荷，当电荷积聚到一定程度时，不同电荷云团之间，或云与大地之间的电场强度可以击穿空气（一般为25-30KV/cm），开始游离放电，我们称之为"先导放电"。云对地的先导放电是云向地面跳跃式逐渐发展的，当到达地面时（地面上的建筑物，架空输电线等），便会产生由地面向云团的逆导主放电。在主放电阶段里，由于异性电荷的剧烈中和，会出现很大的雷电流（一般为几十千安至几百千安），并随之发生强烈的闪电和巨响，这就形成雷电。</p><p><img src="data/attachment/forum/bbsxp/2008-7/20087161813210.jpg" border=0 /></p> 学习了，谢楼上 <img height=24 src="Images/Emoticons/49.gif" width=24 border=0 /> Images/Emoticons/14.gif Leave a group when wow power leveling it bogs you down.<br />3) Play a Multi-Zone game. When you hit level 10 or so, its time to run to the nearest "other"
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<br />starting area and do the quests there. You will do them fast, and get exp for all the kills (as long
<br />
<br />as they wow power leveling are colored green to
<br />
<br />you) Doing a load of quests 3-5 levels beneath you really racks up EXP fast.
<br />4) Green wow power leveling quests are
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<br />your friends! These are quests that are 2-3 levels beneath you. When I get a bunch of yellow colored
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<br />wow power leveling quests, sometimes I'll just 'level grind' 2-3
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<br />levels, then power through the quests solo. It basically comes to this: If you are getting killed
<br />
<br />more than once doing a single
<br />quest, you are aion power level wasting time-
<br />
<br />its better to grind a level and do it later.
<br />5) Dont aion powerleveling be afraid to dump
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<br />quests It's so tempting....you just don't want to let go of that quest that's been in your books
<br />
<br />buy wow gold for several days. It requires you to
<br />
<br />run around the world - see this
<br />person, see that aion kinah person...will take
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<br />you 3 hours. Or that quest you forgot to do way back in Elwynn Forest, and now you're all the way in
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<br />the Wetlands. DUMP IT. There are thousands of quests in this game.
<br />Wasting aion power level 4 hours just
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<br />to 'finish' that green or gray quest is not worth it.
<br />Abandon that quest, and wow gold uk replace it with
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<br />others.
顶顶
顶顶 这个学过了 雷电其实是带有正电荷或者负电荷的云之间互相连接在一起时，电荷之间的放电现象。
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