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bortz [bɔ:ts] n
gen. 圆粒〔下等,黑〕金刚石; 金刚砂研磨用的金刚石粉
met. 次等金刚石
oil 不纯金刚石
tech. 金刚石粉粒; 金刚石粒; 圆钻金刚石
textile 下等钻石
bortz: 15 phrases in 5 subjects
Drilling1
Metallurgy1
Oil / petroleum1
Technology11
Water resources1