lead gauge pitch gauge screw pitch gauge thread pitch gauge
螺距规;
lead gauge pitch gauge screw pitch gauge thread pitch gauge
螺距规;
lead gauge pitch gauge screw pitch gauge thread pitch gauge
螺距规;
lead gauge pitch gauge screw pitch gauge thread pitch gauge
螺距规;
circumferential pitch
圆周齿距;
周节;
圆周齿节;
周向节距;