英语词汇“humphrey's spiral”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	humphrey's spiral
释义	Humphrey's spiral Humphrey's spiral [′həm·frēz ‚spī·rəl] (mining engineering) An ore concentrator consisting of a stationary spiral trough through which ore pulp gravitates; heavy particles stay on the inside and lighter ones climb to the outside.
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Humphrey's spiral