Pitch diameter (d) is the diameter of the pitch circle.

节圆直径(D)：节圆直径是节圆所在圆的直径。

Pitch Point is the intersection of the spline tooth profile with the pitch circle.

节点是键齿的齿廓与节圆的交点。

Particularly suitable for fixture building by direct mounting on cylinder head small pitch circle dia.

and accurate centring特别适合夹具直接安装在气缸盖(小分度圆直径。)

Pitch circle is the reference circle from which all transverse spline tooth dimensions are constructed.

节圆是一个参考圆，花键的键齿的所有的横向尺寸都是以节圆为基础开始计算的。

Gears on nonparallel, non-intersecting shafts also have pitch circles, but the rolling-pitch-circle concept is not valid.

非平行的齿轮，非交叉传动的轴也有节点，但不存在纯滚动节圆的概念。

Bolt circle diameter and pitch between bolt holes.

螺栓圆周直径及螺栓孔间距。

The polar equation of non-circular gear pitch curve, calculation method of center distance, formula of pitch curve length, primary circle radius and pressure Angle is given.

给出了非圆齿轮的节曲线极坐标方程，两齿轮中心距的计算方法，节曲线长度、基础圆半径和压力角的计算公式。

Using the curve fitted pitch, the universal calculation module of manufacture data of non-circle gear for all kind of non-circle gear can be got more easily.

利用拟合后的非圆齿轮节曲线，就可以使得所有非圆齿轮加工数据的计算有了通用的计算模块。

Ap (Aerial Photography) Mode removes the SAFE Circle and makes pitch and roll inputs relative to the quad's present orientation.

AP(空中摄影)模式消除了安全圈，使相对于四公司目前的方向俯仰和滚动投入。

Once the screw turns a circle, the liquid inside the sealing chamber will be pushed forward by a pitch.

螺杆每转一周，密封腔中的液体向前推进一个螺距。