single threaded screw 中文意思是什麼
single threaded screw
解釋
單頭螺紋螺釘-
Tooth interference of single - threaded trapezoidal rotor profile and fixed pitch screw in dry twin screw vacuum pump
單頭等螺距梯形齒螺桿轉子型線的干涉問題研究
分享友人