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關注:1
2013-05-23 12:21
求翻譯:By the reciprocating motion of the piston or plunger, liquid flows through the pump in a start and stop pulsating stream是什么意思?![]() ![]() By the reciprocating motion of the piston or plunger, liquid flows through the pump in a start and stop pulsating stream
問題補充: |
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