Pump case are welded castings steel and steel plates.
泵壳是由铸钢与钢板焊接而成的。
In this case breathing can be maintained artificially by an air pump.
在这种情况下，呼吸得以维持，人为地由一个空气泵。
In the case gas is present, velocity of pressure drop in pump increases.
在有气体存在的情况下，泵内压力下降速度加快。
He ran in every five minutes to pump me about the case.
他每隔五分钟就跑来追问我这件事。
He ran in every five minutes to pump me about the case.
他每隔五分钟就跑来追问我这件事。
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