The ranges of most optical methods which are used in high precision surface profiling, are limited by the wavelength of light.
在较高精度面形测量的光学方法中，很多测量范围都受到光波波长的限制。
Practice proved that profiling finger, sleeve, etc special tools can shorten die manufacturing period and guarantee die manufacturing precision, and can be widely applied.
生产实践证明，仿形指、套筒等专用工具起到了缩短模具制造周期、保证模具制造精度的作用，可以推广应用。
The traditional processing method of brake CAM shaft is to process on the profiling machine, with low efficiency and bad precision.
传统的加工制动凸轮轴的方法是在靠模铣床上加工，效率低、精度差。
The problems about tooth profile precision of gear hobs caused by the current profiling theory and approximate design method of gear hobs are analyzed.
分析了现行齿轮滚刀齿形造形理论及近似设计方法引起的滚刀齿形精度问题，提出一种齿轮滚刀齿形设计新方案———多参数优化齿形设计方法。
The problems about tooth profile precision of gear hobs caused by the current profiling theory and approximate design method of gear hobs are analyzed.
分析了现行齿轮滚刀齿形造形理论及近似设计方法引起的滚刀齿形精度问题，提出一种齿轮滚刀齿形设计新方案———多参数优化齿形设计方法。
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