criteria of curve meaning in Chinese

曲线准则

With the experiment part , the errors of sk - 21 nc machine tool have been measured , and a serial of data is gotten which lead to the error discrimination . ( 3 ) based on the kinematical theory of mbs , the calculation methods for the ideal center envelop curve of grinding wheel on cam grinding , the practical cutter track , inverse contour of cam , ideal nc instructions , precision nc instructions , the inner / outer normal and the fitting criterion of curve have been all discussed in detail in this paper
( 3 )通过精密加工的约束条件方程,探讨理想刀具路线、逆变数控指令与实际刀具轨迹之间的映射关系,解决误差补偿技术提高加工精度的核心问题? ?当要求数控磨床的砂轮中心准确到达给定的理想点时,精密数控指令值究竟该是多少,如何能够通过计算,获得这样的数控指令值,给出经修正的数控指令计算方法。