英语词汇“folding boards”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	folding boards
释义	folding boards folding boards [′fōld·iŋ ‚bȯrdz] (mining engineering) A shifting frame on which the cage rests in a mine. Also known as chairs; dogs; keeps; keps.
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