whitworth form 中文意思是什麼
whitworth form
解釋
惠氏螺紋牙樣-
Specification for parallel screw threads of whitworth form
惠氏直螺紋規范 -
Gas cylinders. taper screw thread for valve stem and cylinder neck assembly. nominal diameter 28. 3 mm, taper 3 25, 14 tpi, whitworth form
氣瓶.閥門堵頭和氣瓶頸口組件用錐體螺紋.公稱直徑28 . 3毫米,錐度3 25 ,每英寸螺紋齒數14 ,惠氏螺紋
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