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Low grade refractory fluorite 低品位难选萤石矿
The new technique of biohydrometallurgy will bring novel opportunities and challenges to recovery the valuable metallic elements from the low grade refractory sulfides. 生物湿法冶金技术与传统矿业氧化工艺相比,成本低、无污染,具有广阔的工业应用前景。
Low grade refractory magnetite ore 低品位难选磁铁矿
Research on High-Efficiency Energy-Saving Beneficiation Technology for Tiegukeng Low Grade Refractory Magnetite Ore 铁古坑低品位难选磁铁矿高效节能选矿技术
A low number; a low grade of oil. 一个小的数; 低级油
John is down on his teacher because she gave him a low grade. 约翰恨他的导师，因为她给他打了低分。
My son mucked up the car engine by using cheap, low grade gasoline. 我的儿子使用便宜的低级汽油,汽车引擎损坏了。
Low grades are getting Hellen down. 低分数使海伦闷闷不乐。
Low grades are get ting Helen down. 考分很低使海纶闷闷不乐。
He is a bit let down by the low grade he got. 这次成绩不好, 他有点气馁。
The Bayan Obo cre depesit is a multi-metal associated ore deposit, which is celebrated for its low grade, fine,impure and refractory minerals in the world. 白云鄂博矿床是世界特有的铁、稀土、铌、钪等多金属共生矿床,以矿物的贫、细、杂、难选而闻名于世。
My son muck up the car engine by using cheap, low grade gasoline. 我的儿子使用便宜的低级汽油,汽车引擎损坏了。
The teacher remonstrated with the boy about his low grade. 教师告诫男孩,说他的分数太低了。
My son muck up the car engine by using cheap,low grade gasoline. 我的儿子使用便宜的低级汽油，这把汽车引擎损坏了。
The teacher remonstrated with the boy about his low grades. 教师告诫男孩，说他的分数太低了。
Low quality is always a problem; low grade may not be. 质量低常成为一个问题，但等级低则不是。
Untreated low grade rejection also poses an increased risk for CAV. 为CAV未处理的低等级拒绝也形成增加的风险.
Non Ai lenses can mount on low grade nikon DSLR body??? 用尽旧镜微距能力，专人指导使用微距滤镜，拍尽微距世界！
He tore up his test paper so that his mother wouldn't see his low grade. 他把自己的考卷儿撕了,这样他的母亲就不会看到他得的低分数。
Low grades are getting him down. 低分数使他郁郁不乐。