径向位移必须伴有圆周力。
The radial displacement must be accompanied by a circumferential force.
分析认为，锯切方向直接影响着管壁的受力状态，锯片与管子的接触弧长和锯切圆周力成正比关系。
The saw cutting direction directly affects the pressed wall thickness, the contacting arc length between saw disc and pipe has direct ratio to the cutting circumference force through analysis.
看过一简单、快速的演示圆周运动中力和加速度的变化吗？
Looking for a simple, quick demonstration of forces and acceleration in circle motion?
关闭期间的扭矩产生阀座力，并均匀一致的作用在整个圆周周围。
Seating forces are generated by the torque during closing uniformly around the entire circumference.
节点轴向力、径向力均随时间的增加而减小，而且节点应力变化速率在中心区域小于圆周处。
The node axial force and radial force decreased with the time increased and the change rate of the node stress at the center was less than that at the circumference.
节点轴向力、径向力均随时间的增加而减小，而且节点应力变化速率在中心区域小于圆周处。
The node axial force and radial force decreased with the time increased and the change rate of the node stress at the center was less than that at the circumference.
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