英语词汇“rock bolt”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	rock bolt
释义	WordReference Random House Unabridged Dictionary of American English © 2024 rock′ bolt′, [Mining, Civ. Engin.] Mining, Civil Engineeringa steel or fiberglass bolt inserted and anchored in a hole drilled in rock to prevent caving of the roof of a tunnel or subterranean chamber. 1955–60
随便看	sulfo group sulfonamide sulfonate sulfonation sulfone sulfonic sulfonic acid sulfonium sulfonyl sulfonyl chloride sulfo radical sulfoxide sulfur sulfurate sulfurated potash sulfuration sulfurator sulfur bacteria sulfur-bottom sulfur butterfly sulfur dioxide sulfur dye sulfureous sulfureously sulfureousness

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