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NPT螺纹PT螺纹G螺纹和公制螺纹的区别 |
发表于 2006-11-6 09:28:37
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Re: NPT螺纹PT螺纹G螺纹和公制螺纹的区别
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发表于 2006-12-6 08:42:27
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Re: NPT螺纹PT螺纹G螺纹和公制螺纹的区别
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发表于 2006-12-23 00:43:30
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Re: NPT螺纹PT螺纹G螺纹和公制螺纹的区别
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