- 1. external pipe thread: 外管螺纹
... external photoeffect detector 外光电效应检测器 external pipe thread 外管螺纹 external pliers 轴用卡簧钳 ...
dict.youdao.com - 2. parallel external pipe thread: 圆柱外管螺纹
dict.youdao.com - 3. taper external pipe thread: 圆锥外管螺纹
dict.youdao.com - 4. external l pipe thread: 外管螺纹
dict.youdao.com
有道词典