英语词汇“rag pump”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	rag pump
释义	rag pump /ˈraɡ pʌmp/ Mining. Now historical noun A chain-pump driven by a rag wheel. Origin Mid 18th century. From rag + pump.
随便看	unitarity unitary unitary authority unitary council unitary group unitary matrix unitary symmetry unitary tax unitary taxation Unitas, Johnny unit audio unit cell unit character unit circle unit commander unit construction unit cost unit cube unite united United Arab Emirates United Arab Republic United Artists United Brethren United Colonies

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rag pump