The concept of minimum limit push lead (MLPL) in the design of varying pitch screw is introduced and a comprehensive theoretical analysis is carried out.
提出了不等距螺旋设计中的最小极限推程问题，并进行了全面的理论分析。
For models with a screw-in crown, please push and screw the crown in as far as the stop.
对于一个螺旋式表冠，请尽量推动和停止螺旋型中的皇冠。
In normal use, non spiral crown should push the crown back to the original position, the crown screw thread to prevent water infiltration.
正常使用中，非螺旋式表冠应将表冠按回原始位置，螺纹表冠应旋紧以防止水渗入。
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