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。
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.
考察了熔区移动速度、区熔次数、熔区长度以及黄磷原料杂质初始含量对提纯效果的影响。
The influence of variable zone lengths, zone passes, moving speed and the impurity of raw materials on the purification process was studied.
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