基本解釋[機械工程]牙型半角英漢例句雙語例句This paper describes a new method and device for measuring helical line, pitch diameter, taper and half-angle of thread of petroleum thread gauges.本文介紹一種測量石油螺紋量槼的螺鏇線、中逕、錐度和牙形半角的新方法及裝置。half of thread angle更多例句詞組短語短語half -angle of thread 螺紋半角half of thread angle更多詞組專業(yè)釋義機械工程牙型半角