“roof bolt”的概念、定义、翻译、参考文献-科学参考

单词	roof bolt
释义	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	Riedel's disease riedenite Riefler clock riegel Riegler's test Rieke diagram Riemann-Christoffel tensor Riemann function Riemann hypothesis Riemannian curvature Riemannian geometry Riemannian manifold Riemannian space-time Riemann integral Riemann-Lebesgue lemma Riemann mapping theorem Riemann method Riemann P function Riemann space Riemann sphere Riemann surfaces Riemann tensors Riemann zeta function Riesz-Fischer theorem rifampicin

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