英语词汇“traction tube”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	traction tube
释义	traction tube traction tube [′trak·shən ‚tüb] (engineering) A device for measuring the minimum water velocities capable of moving various sizes of sand grains; it consists of a horizontal glass tube half-filled with sand.
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