"3/4英制螺纹规格直径表"...3/4英制螺纹规格直径表

　"英制螺纹3/4外径是多少"...英制螺纹3/4外径是多少

　"英制3/4内螺纹"...英制3/4内螺纹

　"英制3/4螺纹底孔"...英制3/4螺纹底孔

　"英制螺纹1/4-28"...英制螺纹1/4-28

　"3/4英制螺纹外径尺寸怎么算"...3/4英制螺纹外径尺寸怎么算

　"英制螺纹3/8-24"...英制螺纹3/8-24

　"英制3/4螺纹底孔多大"...英制3/4螺纹底孔多大

　"英制螺纹3/8"...英制螺纹3/8

　"英制螺纹3/8-16"...英制螺纹3/8-16