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1 ?投掷角分布 ...投掷角分布,南大西洋异常区,极光带 [gap=916]Keywords】: Particle detector inside `ZY_1',Radiation belt model,Pitch angle distribution,SAA,Auroral belt ...
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Meanwhile, we change the thread parameters, study the stress distribution caused by changing the pitch, taper and thread Angle, this work can provide a reference for manufacture. 同时改变钻具接头的螺纹参数，研究螺距、锥度、牙型角的改变对其应力分布的影响，为钻具接头的生产加工提供参考。
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