英语词汇“pit sampling”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	pit sampling
释义	pit sampling pit sampling [′pit ‚sam·pliŋ] (mining engineering) Using small untimbered pits to gain access to shallow alluvial deposits or ore dumps for purpose of testing or valuation.
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