The water flow velocity in the suction pipe, which is crucial for evaluating the performance on pumping fish, can be measured by the pumped water flow rate of the riser in an air lift pump system.

气力提升泵的水输送量反映了提升管进口的流速情况，而进口流速是衡量吸鱼效果的重要因素。

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B. water-filled pump start before the pump casing and suction pipe must be full of water that is because of the presence of air vacuum pumping the population can not be formed and maintained.

陈籍水泵在启动以前，泵壳和吸水管内必须先布满水，这是因为有空气存在的情况下，泵吸人口真空无法形成和保持。

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This paper introduces the structure and hydraulic design of the multiphase flow centrifugal pump, which draught sands from the riverbed and discharge the air of the suction pipe.

文章介绍一种用于从河底吸取泥砂并且有自吸排气的离心式多相流泵的结构及水力设计。

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