The results indicate that a stable and suitable thermal field, the transparence of B_2O_3, doping quantity are important conditions for growth of twin-free InP crystal.
实验证明，建立一个稳定合适的热场、保持b_2o_3的透明度、控制好掺杂量等是减少孪晶的必要条件。
The cultivated rheum required quantity has an increase for the fe, mn, co, and decrease for the zn, cu, ni element nutrition with the growth age changes.
随著生长年龄增加种植大黄对铁、锰、钴元素营养需求量有所增加，对锌、铜、镍元素营养的需求量略减。
Exceed certain quantity to turn over and reduce soil retain water to preserve soil moisture ability, for trees growth disadvantage.
超过一定量反而降低土壤蓄水保墒能力，对树木生长不利。
应用推荐