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

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.
随便看	forestry research and development agency forestry research coordinating committee forestry research institute of malawi forestry research institute of nigeria forestry research programme forestry research support programme for asia and the pacific forestry resources inc forestry safety society of nova scotia forestry science institute of vietnam forestry section forestry sector technical coordination unit forestry, urban forests forests and fish rules forests and the european union resource network forests and the european union resources network forests and trees forest school association forest school camps forest school learning initiative forest science data bank forest science institute of vietnam forest sector umbrella programme forest service forest service employees for environmental ethics

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Humphrey's spiral