如图所示两端开口的弯管左管插入水银槽中右管有一段高为h的水银柱中间封有一段空气则a.弯管左管内外水银面的高度差为hb.若把弯管�上 Template




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tomski如图所示两端开口的弯管左管插入水银槽中右管有一段高为h的水银柱中间封有一段空气则a.弯管左管内外水银面的高度差为hb.若把弯管�上 coloring