angle of riflingangle of threadflight anglescrew thread anglescrew-thread anglethread angle螺纹: screw thread; flight; helica ...角: role; part; character垂直螺纹角: normal thread angle切螺纹角: angle of rifling划纹角: dig in angle下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:螺纹角,即可在微信中查询翻译