英语词汇“roof bolt”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	roof bolt
释义	roof bolt roof bolt [′rüf ‚bōlt] (mining engineering) One of the long steel bolts driven into walls or roofs of underground excavations to strengthen the pinning of rock strata.
随便看	marginal abscess marginal alveolar bone loss marginal analysis marginal arcade marginal arcade of mondor marginal artery marginal artery of colon marginal artery of the colon marginal atrial branch of right coronary artery marginal auricular dermatosis marginal bar marginal benefit marginal benefit cost ratio marginal blepharitis marginal blight marginal branch marginal branch of cingulate sulcus marginal branch of parieto-occipital sulcus marginal branch of the right coronary artery marginal branch ta of cingulate sulcus marginal channels marginal checking marginal chlorosis marginal coefficient of performance marginal conditional stochastic dominance

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