Based on the analysis of the operational process of space-based weapons aiming at ground targets, this paper firstly educes that the orbit maneuver is the pivotal element in the rapid operation.
首先通过对天基武器作战过程的分析，得出在轨机动是实现天基快速对地打击的关键的结论；
Macrophage migration inhibitory factor(MIF), a potential pro inflammatory cytokine, is a pivotal regulatory element in the nature and adapted immune.
巨噬细胞移动抑制因子（MIF）是一种潜在的促炎细胞因子，是天然免疫和获得性免疫中的关键调节元件。
The dissertation analyses the air spring and spring bracket which belong to the air suspension system as pivotal components taking use of the finite element theory and method.
论文应用有限元理论与方法，研究分析了空气悬架的关键元件——空气弹簧和弹簧支架。
With three dimensional finite element method, the author analysed and calculated the stress of the dam section with erecting bay in the Zuojiang water resources pivotal project.
利用三维有限元法分析计算了左江水利枢纽安装间坝段的应力。
With three dimensional finite element method, the author analysed and calculated the stress of the dam section with erecting bay in the Zuojiang water resources pivotal project.
利用三维有限元法分析计算了左江水利枢纽安装间坝段的应力。
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