丝帽（母）
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    编辑拼音edit jyutping

    螺母；螺帽。一种紧固件。一般与螺栓组合使用。其外形为六角形、方形、圆形等。其中有圆孔，孔内制有阴螺纹。用来旋在螺栓上，将被连接的零件或构件紧固。

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    编辑英文解释edit jyutping

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