名词中文翻译
中文翻译：外部螺纹
同义词：
['outer threading', 'external threading']
例句：
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1.The screws are designed with external knurling for easy installation.
这些螺丝设计有外部螺纹，便于安装。
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2.The tool has an external knurling that makes it easier to grip.
这个工具有一个外部螺纹，使得握持更轻松。
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3.The exterior of the building is finished with external knurling for durability.
建筑的外部用外部螺纹处理以增加耐用性。