“hard-rock tunnel boring”的概念、定义、翻译、参考文献-科学参考

单词	hard-rock tunnel boring
释义	hard-rock tunnel boring [`härd ¦räk `tǝn·ǝl ´bȯr·iŋ] ^{MINING ENGINEERING} A tunneling method utilizing a mole to cut out 7-foot-diameter (2.1-meter) drifts in hard rock at an average rate of 5 feet (1.5 meters) per hour.
随便看	gene expression gene flow gene frequency gene fusion gene library gene loss gene overlap gene penetrance gene pool general address general anesthesia general anesthetic general arrangement plans general aviation general broadcast general chart general circulation general depot general formula general integral generalized binomial trials model generalized coordinates generalized force generalized function generalized hydrostatic equation

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