straightway type piston pump
... straightway testing 直接试验 straightway type piston pump 直通式活塞泵 straightway valve 直通阀 ...
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straight through type piston pump
straight through type piston pump 暴雨排水泵; 直通活塞泵; 直通式活塞泵 straight way type piston pump 直通活塞泵（美） ..
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