Departments should pay attention to before installing the screw force is balanced, lifting (activity) it is flexible.
在安装前应注意各部的螺丝受力是否平衡、升降(活动)是否灵活。
Retention gear pump, motor and foot screws, screw the force should be uniform, reliable connection.
紧固齿轮泵、电动机的地脚螺钉时，螺钉受力应均匀，连接可靠。
The strength calculation formula of the screw propeller under the action of centrifugal force was obtained through multivariate fitting.
经多变量拟合，得到了离心力作用下螺旋推进器的强度计算公式。
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