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浪漫满屋
发表于 2011-7-13 11:19:44
NPT螺纹,PT螺纹,G螺纹和公制螺纹的含义和区别
NPT螺纹,PT螺纹,G螺纹和公制螺纹的含义和区别
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NPT螺纹,PT螺纹,G螺纹和公制螺纹的含义和区别