by means of zone melting recrystallization (zmr) method, polycrystalline silicon thin films with large grains and relative high carrier mobility were obtained, which could act as a seeding layer.

经区熔再结晶（zmr）后，薄膜的晶粒尺寸有了较大的提高，而且迁移率较高，这样的薄膜可以用作晶体硅薄膜太阳电池的籽晶层。

second , the polycrystal mo with the orientation of (110) made with high purity sintered and arc-melting mo was prepared by the method of electron beam floating zone melting without a seed.

采用无籽晶法电子束悬浮区熔定向凝固技术，利用粉末烧结冶金级钼和电弧熔炼高纯钼，经多次区熔获得了取向为（110）的定向凝固多晶钼。

if the length of melted zone is thought invariable for a given kind of alloy, the temperature gradient increases with the rising of the eb power and zone melting rate.

在不考虑熔区长度不变的条件下，固液界面前沿的温度梯度随抽拉速率的增加而增加。

there were many methods for preparing cobalt metal of 99.999% purity, such as extraction, membrane separation, ion exchange, electrolysis, zone melting etc.

目前制备99.999%以上金属高纯钴的制备方法很多，主要制备工艺有萃取法，膜分离法，离子交换法，电解法，区域熔炼法等方法。

preparing principle and preparation technology of mo and mo-nb alloy single crystal and structure and component of electron beam floating zone melting are introduced.

介绍了钼和钼-铌单晶的制备原理、制备工艺及电子束区域熔炼炉组成结构。

on account of the solidification character of rare earth alloys, the zone melting is improved by putting the alloys prepared by arc-melting into the quartz tube, then melting.

鑒于稀土化合物凝固结晶的特点，对区熔法进行了改进，将电弧炉熔炼好的样品装入石英管中，封石英管后在区熔设备上进行区熔。

the temperature gradient in front of s/l interface was measured on zone melting liquid metal cooling(zmlmc) directional solidification apparatus.

对定向凝固区域熔化液态金属冷却法的固液界面前沿温度梯度进行了测定。