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本文通过推导、分析曲齿锥齿轮的背锥公式［１］，证实用背锥坐标法测量曲齿锥齿轮大端端面模数准确度高。
In this paper, the formula of the back taper of the bevel gear is deduced and analyzed [1], which proves the accuracy of using the back taper coordinate method to measure the modulus of the large end face of the bevel gear.