variable zone

基本解释

The adaptation of Boer Goat with its performance in northsemitropical and variable zone was discussed.
本文根据我国北亚热带和北温带引进的波尔山羊的生产性能表现，讨论了其引种适应性。
The influence of variable zone lengths, zone passes, moving speed and the impurity of raw materials on the purification process was studied.
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 main tension zone and law of stress distribution are investigated regarding the relative width of diagonal tension stress zone as variable.
以坝踵主拉应力区相对宽度为变量，探讨了重力坝坝踵主拉应力区的范围和应力分布规律。