英语词汇“shaft drilling”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	shaft drilling
释义	shaft drilling shaft drilling [′shaft ‚dril·iŋ] (mining engineering) The drilling of small shafts up to about 5 feet (1.5 meters) in diameter with the shot drill.
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