1) Virtual pitch diameter
作用中径
1.
This paper present that errors in flank angle can actually influence the virtual pitch diameter of the thread, then influences the thread coupling interchangeability.
介绍了与普通螺纹有关的基本术语 ,针对螺纹牙型半角误差常被作为衡量螺纹牙型角度误差对其互换性的影响参数的实际状况 ,提出牙侧角误差(非牙型半角误差 )才是真正影响螺纹的作用中径从而影响螺纹结合互换性的参数 ,并从理论上进行了分析与推
2.
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.
采用作用中径来分析锯齿形螺纹的配合特性。
3.
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。
2) Functional diameter of thread
螺纹作用中径
3) effect radius
作用半径
1.
The effect radius of ecological field on the population of Quercus liaotungensis was decided as 15 meters and the ecological interference of Fraxinus rhynchophylla and Lespedeza bicolor population has obvious heterogeneity.
经计算 ,辽东栎种群生态场作用半径为 1 5m ,大叶白蜡 -胡枝子种群间生态干涉具有明显的异质性特征。
4) functional route
作用路径
1.
And the two main functional routes of competitive intelligence are spreading about enterprises and spreading about government and agencies.
其中,从企业内部和外部两条途径进行扩散是贸易竞争情报主要的作用路径。
5) aperturing
孔径作用
6) interaction channels
作用途径
1.
The relationship and interaction channels between vocational education and socio-economic development
职业教育与社会经济发展的关系及其相互作用途径
补充资料：径径
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参考词条