The paper introduces the qualitative, quantificational analysis and calculation of the of load capacity and stiffness for contrapositive hydrostatic pocket of hydrostatic slide in precision and ultraprecision machine, and brings forward the method of optimization calculation. 对应用于精密加工和超精密加工机床中的液体静压导轨的承载能力和刚度进行了定性和定量分析计算,并提出对其优化的方法。
At present, it is feasible for China to amend or alter nationality law for a finite and contrapositive dual-citizenship policy. 当前,我国调整和修改国籍法,有限度或有针对性地实行双重国籍政策是可行的。
On contrapositive symmetry of Fuzzy R-implications 关于R-模糊蕴涵的逆否对称性