常見例句Information from practical operation indicate that in exploration of water abundant placer goldby vibratory sampling drill, no representative rock sample could be collected. 實(shí)際施工資料表明;在富水性強(qiáng)的砂金礦勘探中;采用震動(dòng)取樣鉆;無法獲得有代表性的巖樣. 返回 Goldby