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Function test and automatic controller test for ballast pump.
压载泵效用试验和自动控制装置试验。
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We have used the ballast pump instead of the main sea water pump which was leaking , we are going to have the bad pump dismantled and repaired .
我们用压载水泵代替了漏水的海水泵，我们已准备将坏泵拆检修理。
Pump out ballast water.
排出压载水。
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