双圆弧弧齿锥齿轮
double circular arced spiral bevel gear
double circular arc profile spiral bevel gear
双圆弧弧齿锥齿轮传动
Double circular arc profile bevel gears
小圆心角圆弧
the arc of small central angle
圆弧圆柱蜗杆
circle arc cylindrical worm screw
hollow flank worm
RCM接收信号强度指示与切圆圆心混合定位算法
RCM RSSI and Circle centre Mixed localization