According to the analysis of the speed force of muscle contraction in track and field, the author point out the power training theory.
通过对田径运动中肌肉收缩速度力量分析，提出了提高运动员专项速度力量的训练原理。
Strong two dimensional effect on the field penetrating speed should be included in the fluid analysis for a plasma space distribution with high density gradient.
对于等离子体空间分布存在较大的密度梯度的物理问题，必须考虑二维空间特性对磁场渗透速度的影响。
Based on the analysis software of electromagnetic field, the electromagnetic force which is for high-speed solenoid was calculated by the finite element analysis of electromagnetic field.
应用电磁场分析软件对高速电磁阀电磁作用力进行有限元分析计算。
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