1) p.d.
中径;节径
3) nodal diameter
节径
4) pitch diameter
节径，中径，平均直径(电缆的)
5) pitch diameter
中径
1.
Pitch diameter measuring of thread ring gauge and uncertainty evaluation;
螺纹环规的中径测量及其不确定度评定
2.
Analysis of slope error in measurement of pitch diameter of metric trapezoidal thread plus gauge
公制梯形螺纹塞规中径测量斜率误差分析
3.
By combining the traditional three ball measuring principle for thread with image measuring technology, a kind of 3-D automatic measuring system based on CCD image for pitch diameter parameters of taper thread is developed, and errors of the image-based three ball method are analyzed.
将传统的螺纹三针测量原理与图像测量技术相结合,设计开发了一种基于CCD图像的锥螺纹中径参数三维自动测量系统,并对图像三针测量法进行了误差分析。
6) pitch circle diameter (p.c.d.)
装配节圆(中心圆)直径
补充资料：中径
1.犹直径。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条