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

单词	hard-rock driller
释义	hard-rock driller [`härd ¦räk `dril·ǝr] ^{MINING ENGINEERING} A worker who operates a drill in a mine where the rocks are generally igneous or metamorphosed and considered hard, such as rocks in which coal and salt are generally found.
随便看	recycle ratio recycle stock recycling red red acetate red algae red antimony red arsenic red azimuth tables redbed red blood cell red brass red charcoal red clay red cobalt red copper ore Reddish-Brown Lateritic soil Reddish-Brown soil red dwarf star red earth redefine redeposition red giant star red giant tip red glass

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