pitch deviation meaning in English

俯仰偏差

This tester is suitable to measure accuracies of pitch deviation with inside and outside straight helical circular gear among seventh degree . easy to operate and maintenance
适用于检查7级或低于7级精度的内外齿合直齿与斜齿圆柱齿轮的周节偏差。操作简便，易于维修，可供各工厂计量室及车间使用。
The causes of formation of global form errors for sbg and its separation method are analyzed theoretically . the tooth surface deviation and pitch deviations resulted from tooth surface distortion are separated and derived
从理论上分析了螺旋锥齿轮整体误差的形成原因及其分离方法,根据整体误差的性质,分离出由于齿面变形所引起的齿距误差,获得了齿面偏差。