The collapsing cavities will result in instantaneous high temperature and high pressure in the local zone of the melt resulting in refining grains and improving the distribution of Si element .

空化泡崩溃时产生局部 高温高压，从而导致晶粒 细化，改善了Si元素的分布情况。

Purification Study of Neodymium Metal by Zone Refining Solid State Electrotransport and Zone Refining Electrotransport Joint Method

用 区熔、电迁移和区熔-电迁移联合法 提纯金属钕的研究

The combination of vacuum distillation and zone refining was adopted to prepare ultra high purity indium from crude indium .

以99.7%的粗铟为原料，提出了采用真空蒸馏& 区域 熔炼联合的方法来制备高纯金属铟。

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。

Laser welding speed is fast heat affected zone is small weld microstructure is refining laser welding deformation is small generally speaking mechanical properties of weld seam is stronger than the base metal .

激光焊接速度快，热影响 区小，焊缝组织 细化，焊接变形小，一般激光焊缝的机械性能都强于母材。

Ultra-pure germanium polycrystalline material with a net impurity concentration of 5 × 1010 / cm3 ( atoms ) has been prepared by the zone refining mathod . All raw materials reagents and facilities used in the preparation are made in China . The involved techniques are described .

介绍了用国产材料进行锗 区 熔 提纯的制备工艺，借助此工艺已获得净杂质浓度为～1010cm－3量级的多晶材料。

A new method of zone melting for refining super-purity gallium

一个新的 提炼超纯金属镓的 区域熔化法

In the process of floating zone refining neodymium bar with induction heating the electromagnetic forces exerted on floating melted zone of neodymium bar by high frequency current in induction coil were calculated .

计算了感应加热悬浮 区 熔 提纯钕棒过程中，感应线圈中的高频电流作用在钕棒悬浮熔区上的电磁力。

The pre lifting zone in the riser of the II FCCU in Jinxi General Works of Petroleum Refining and Petrochemicals was revamped by using the new lifting zone patent technique developed by Luoyang Petrochemical Engineering Corporation .

锦西 炼油化工总厂采用洛阳石油化工工程公司的新型预提升段专利技术对Ⅱ套催化裂化装置反应提升管预提升 段进行了改造，这是该专利技术的首次工业应用。

Zone refining of high purity germanium

高纯锗的 区域 提纯

The Calculation and Analysis on Zone Refining of Rare Earth Metal

区 熔 提纯稀土金属的理论计算与分析

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。