自攻螺纹tapping: tapping2 n. 1.(开孔)导出液体 ...screw thread: 螺纹;螺丝线。 tapping screw, thread forming screw: 自攻螺丝tapping screw thread rolling dies plates: 自攻螺丝牙板thread tapping: 攻丝下载手机词典可随时随地查词查翻译