electrolytic lead refining 铅电解精炼
Bett lead-refining 贝特炼铅法
continuous lead refining 铅的连续精炼
lead-refining furnace operator 铅精炼炉操作员
fluosilicate lead refining process 氟硅酸盐炼铅法
fire refining of crude lead 粗铅火法精炼
lead electro-refining 铅电解精炼
lead bullion fire refining 粗铅火法精炼
For Moodle and Martin Dougiamas (lead developer and founder), it's the release of Moodle 2.0 that focuses on refining the LMS and positioning collaboration (rather than publishing) as its main focus.
对于Moodle和Martin Dougiamas(首席开发者和创始人)来说，Moodle 2.0版本聚焦于LMS的重新定义，并将其焦点定位于协作(而非发布)。
The dezincing limit from molten lead by vacuum refining process is studied by theoretic analysis and experiments.
对铅熔体真空脱锌限度问题进行理论分析和实验验证。
The paper presents some results obtained from a research about effects of rare-earth(RE)and boron(B)refining on the microstructure and dezincification corrosion properties of casting lead brass.
研究了加入稀土和硼细化处理对铸造铅黄铜组织和脱锌腐蚀性能的影响。
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