圆弧形自动门是往复摆动，其运动参数是每分钟摆动次数、摆角大小和行程速比系数等。
The circular arc automatic door is reciprocating swing, and its motion parameters are the number of swing per minute, the size of the swing Angle and the travel speed ratio coefficient.
弯管模往复摆动，供料系统的吐丝头绕管模旋转，形成缠绕运动。
The winding movements were made with the reciprocating pendulation of the elbow module and the rotation of the spinneret surrending the elbow module.
研究复摆钟在相对论运动下的钟慢效应和复摆钟发生钟慢效应的内在机制。
Time dilation effect and the inherent of its mechanisms based on compound pendulum at relativistic motion are studied.
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