名词
中文翻译：外部管螺纹
同义词：
['external thread', 'external pipe threading']
例句：
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1.The machine requires a specific type of external pipe thread to connect the hose.
这台机器需要特定的外部管螺纹来连接软管。
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2. The engineer used an external pipe thread to secure the joint in place.
工程师使用外部管螺纹来固定接头。
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3.The installation process involved carefully threading the external pipe thread into the wall.
安装过程包括小心地将外部管螺纹插入墙壁中。