英语词汇“holman dust extractor”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	holman dust extractor
释义	Holman dust extractor Holman dust extractor [′hōl·mən ′dəst ik‚strak·tər] (mining engineering) A dust-trapping system in which the dust and chippings from percussive drilling operations are drawn back through the hollow drill rod and along a hose to a metal container with filter elements.
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Holman dust extractor