英语词汇“hard-rock tunnel boring”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	hard-rock tunnel boring
释义	hard-rock tunnel boring hard-rock tunnel boring [′härd ¦räk ′tən·əl ‚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	ghost lines froth froth at the mouth frothed frothed at the mouth frothed up frother frothery froth floatation froth floatation process froth flotation froth-flotation process froth fly froth-fly frothier frothiest frothily frothiness frothing frothing agent frothing at the mouth frothing collector frothingham, octavius brooks frothingly frothing up

英语词典包含2567994条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。