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marshal5571

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xgniu

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硅胶板中有荧光的物质 紫外吸收的波长为254nm
9楼2010-09-13 09:02:02
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liufawen

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发哥早已不在江湖...

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因为具有双键的物质才会有紫外吸收
Thebestlifeisnomorethanchattinglaughingoutloudduringtheday,andhavingagoodsleepatnight.
2楼2010-09-12 10:00:20
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marshal5571

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3楼2010-09-12 10:06:45
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ldgzd

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总 书 记

xjxlovelxl:http://emuch.net/bbs/viewthread.php?tid=1644147&fpage=1请仔细阅读,欢迎常来有奖版答疑 2010-09-12 10:55:57
山东的先报个到
书山有路勤为径,学海无涯苦作舟!
4楼2010-09-12 10:20:40
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