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 liftpump 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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The proper liftpump for deepsea mining is one of key equipment of hydraulic mining system of ocean polymetallic nodules.