do not use this for multiple select input as it will cause an error.
不要将此规则用于多项选择,这会引起错误.
The relationship between the screwing length of screw thread and the pitch error, screw linearity error, screw precision and screw tolerance is discussed to explain how to select the screwing length of screw thread in actual applications.
对螺纹旋合长度与螺距误差、螺纹直线度误差、螺纹精度及螺纹公差的相关联系进行分析,说明螺纹旋合长度在实际中的选择应用。
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