half-angle thread flank measurement
... half-and-half solder 铅锡各半的焊料 half-angle thread flank measurement 螺纹半角测量 half-compression relief cam 降压调节凸轮 ...
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本文介绍一种测量石油螺纹量规的螺旋线、中径、锥度和牙形半角的新方法及装置。
This paper describes a new method and device for measuring helical line, pitch diameter, taper and half-angle of thread of petroleum thread gauges.
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