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蓝雪微尘

木虫 (知名作家)

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小木虫(金币+0.5):给个红包,谢谢回帖
引用回帖:
Originally posted by chaishengtao at 2011-04-22 21:48:51:
这个会不会做?
3.用一复式U管压差计测定水流管道A、B两点的压差,压差计的指示液为汞,两段汞柱之间放的是水,今若测得h1=1.2m,h2=1.3m,R1=0.9m,R2=0.95m,问管道中A、B两点间的压差△p为多少(先推导关系式 ...

学过,现在忘了,哈哈
爱情来的快去的也快,只有猪肉卷才是永恒的~
11楼2011-05-03 10:38:43
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yongshan001

新虫 (初入文坛)

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小木虫(金币+0.5):给个红包,谢谢回帖
什么证书都只不过一张纸而已,你觉得有用就有用,没用就没用,能力才是最重要滴!
吃药容易,做药难!
12楼2011-05-03 16:07:45
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