以刃边齿条为工具，测量廓面的直母线族误差，通过误差处理与分析获得齿廓总偏差和螺旋线总偏差。
Taking the straight-line-rack as the tool the error of straight generatrix is measured and by error analysis the tooth profile error and tooth orientation error can be obtained.
本文证明任意阶次磁多极子场力线方程总可以用有限形式解析地表示，并对偶极族和四极族磁多极子场力线的位形给予注记。
In this paper it is pointed out that the equation of field lines of a magnetic multipole with any order and degree can always be analytically expressed in term of finite form.
本文证明任意阶次磁多极子场力线方程总可以用有限形式解析地表示，并对偶极族和四极族磁多极子场力线的位形给予注记。
In this paper it is pointed out that the equation of field lines of a magnetic multipole with any order and degree can always be analytically expressed in term of finite form.
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