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1·These metals may be purified by a technique called zone refining.

这些金属可以用所谓“逐区提纯法”来提纯。

2·These metals may be purified by a technique called zone refining .

这些金属可以用所谓“逐区提纯法”来提纯。

3·Synopsis: Some problems on zone refining of silicon without crucible by wet hydrogen treatment are discussed.

本文讨论了在湿氢条件下，进行硅的无坩埚区域提纯时，所遇到的几个问题。

4·The three main methods for high purity zinc preparation, including electrolytic method, vacuum distillation, zone refining, are summarized and compared in this paper.

本文对目前高纯锌的三种主要制备方法(电解法、真空蒸馏法、区域熔炼法)进行了综述和比较。

5·The methods of preparing high purity iron include solvent extraction, ion exchange, electrolytic refining, zone melting, and so on.

本文介绍了溶剂萃取、离子交换、电解精炼和区域熔炼等冶金提纯方法在高纯铁制备过程中的应用。

6·Real plate gap means the clearance between the surface of stationary disc and the surface of rotating disc in refining zone.

磨盘实际间隙是指动磨片和定磨片在研磨区内齿表面之间的距离。