英语词汇“backing deals”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	backing deals
释义	backing deals backing deals [′bak·iŋ ‚dēlz] (mining engineering) Boards, 1-4 inches (2.5-10 centimeters) thick, of sufficient length to bridge the space between timber or steel sets or between rings in skeleton tubbing.
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