英语词汇“self-advancing supports”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	self-advancing supports
释义	self-advancing supports self-advancing supports [¦self əd¦vans·iŋ sə′pȯrts] (mining engineering) An assembly of hydraulically operated steel hydraulic supports, on a long-wall face, which are moved forward as a unit. Also known as walking props.
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