principle addition canonical expansion theorem 主加法标准展开定理 rare earth addition 稀土添加剂 raw metal additions 含铁添加物 ..
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稀土氧化物添加剂 re oxide addition
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结果表明，较低剂量的稀土添加剂能促进鸡的生长发育。
The result showed that the rare-earth additives of less dosage can promote the growth of Chongren Ma Chickens.
简述了稀土添加剂在国内镀锌、铬、镍、锡、铁、铜工艺上的应用研究进展。
The processes of application research of rare earth elements as additives on zinc, chromium, nickel, tin, iron, copper plating were described.
为了将稀土引入电镀金刚石工具的生产之中，研究了稀土添加剂对镀镍液性能的影响。
Aiming at introducing rare earth into the production of electroplated diamond tools, the effect of rare earth additive on the performance of a common plating nickel bath was studied.
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