英语词汇“hand cleaning, hand picking”的翻译、意思、用法、释义-英汉汉英双解词典-爱贷网

词汇	hand cleaning, hand picking
释义	hand cleaning, hand picking 手选；利用煤和杂质在颜色、光泽、外形及密度上的差别；用人工对大块矸石进行分选的选煤方法。
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