英语词汇“bell hole”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	bell hole
释义	bell hole bell hole [′bel ‚hōl] (mining engineering) One of the holes or excavations made at the section joints of a pipeline for the purpose of repairs. A conical cavity in a coal mine roof caused by the falling of a large concretion.
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