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仰大俯小还是仰小俯大

更新时间: 2019-03-11 00:00:00     

仰小俯大。俯大仰小与俯小仰大是一道化学口诀,就是读量筒示数时用。仰视的时候量筒读数偏小,实际量筒内液体的读数大。俯视同理,量筒读数偏大,测量值比实际值小。仰视读数偏小,俯视读数偏大,根据量水的体积实际分析得出:仰视量取的体积偏大,俯视量取的体积偏小。

量筒所视体积俯大仰小

滴定管所视体积俯小仰大

两者有区别是;因为前者0刻度在下,后者0刻度在上。

关键词: 还是

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