名词
中文翻译:平头钉
同义词:
['flathead screw', 'flat head bolt']
例句:
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1.The pinnigrade was a crucial part of the construction.
平头钉是建筑中至关重要的一部分。
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2. The engineer used a pinnigrade to secure the joint.
工程师使用平头钉来固定接头。
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3.The pinnigrade was removed before the job was completed.
在工作完成之前,需要移除平头钉。