This system can optimize the parameter of gears, check relief grinding of tooth back automatically and design the gear hobs rapidly and reliably.
该系统可优化滚刀设计参数，自动校核齿背铲磨，实现齿轮刀具快速可靠的设计。
Not only do they have a sharpened peg of a tooth but their teeth narrow down to a razor sharp edge at the back making the tigers bite much more lethal.
它们不仅仅有锋利的三角状牙齿，而且背面向下逐渐收缩成剃刀一样锋利，这使得老虎的咬更加致命。
The best profile for tooth back of the relieving shaped milling cutter is firstly presented in theory.
用成形铣刀铣螺旋槽时，求成形铣刀廓形的问题是个求解空间啮合运动的理论问题。
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