“trenching bucket”的概念、定义、翻译、参考文献-科学参考

单词	trenching bucket
释义	trenching bucket 挖沟铲斗
随便看	pump governor pump governor case cover pump governor cover pump grease pump handle pump head pump horse power pump horsepower pumphouse pump house pump impeller pumping pumping action pumping adjuster pumping area pumping-back pumping back method pumping band pumping capacity pumping chamber pumping circuit pump(ing)circuit pumping columm pumping current pumping cycle

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