名词
中文翻译：方形头螺母
同义词：
['square-head bolt', 'square-head screw例句：1. The square-head nut is a common component in many mechanical systems.（方形头螺母是许多机械系统中常见的组件。）2. The square-head nut was used to secure the door hinges together.（方形头螺母用于将门铰链固定在一起。）3. The square-head nut was removed from the machine before it broke down.（在机器出现故障之前，已经从机器中取出了方形头螺母。）']
例句：
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1. The square-head nut is a common component in many mechanical systems.
方形头螺母是许多机械系统中常见的组件。
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2. The square-head nut was used to secure the door hinges together.
方形头螺母用于将门铰链固定在一起。
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3. The square-head nut was removed from the machine before it broke down.
在机器出现故障之前，已经从机器中取出了方形头螺母。