攻丝thread: n. 1.线;细丝;〔英国〕麻纱,〔美国〕棉纱;纤维。 ...tapping: tapping2 n. 1.(开孔)导出液体 ...tapping screw thread: 自攻螺纹tapping screws thread: 自攻螺钉用螺纹tapping screw, thread forming screw: 自攻螺丝下载手机词典可随时随地查词查翻译