virtual pitch的意思|示意

This paper deals with the interchangeability of sawtooth thread used in unidirectional heavy load and the exact fit which apply the fit specific property by means of virtual pitch diameter.

本文讨论了单向承载大、又需紧密配合的锯齿形螺纹互换性问题。

I can still teach you how to play Red Planet at a Virtual World ten years after I flew my last mission. I can recite the sales pitch word for word.

在我“金盆洗 手”十多年后，我仍能教你如何在一个虚拟的世界里扮演火星[译者注：作 者在从事这份工作时，向购买者所做的演示]，一字不差地背诵那些销售秘诀（如：它仅为一杯啤酒的价格等）。

By the use of the displacing enveloping drawing method, a set of exact formulae for calculating the virtual pitch diameter is deduced and verified by measured data.

本文考虑了非对称三角形螺纹的螺距偏差和牙侧角偏差的各种组合对作用中径的共同影响，运用了包容图位移法，分析和推导出非对称螺纹作用中径的精确计算公式。