工程师
- UID
- 8253
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- 3228
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- 阅读权限
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- 注册时间
- 2007-3-21
- 最后登录
- 1970-1-1
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Where required by the Regulatory Bodies of Safety Codes they are to be of the heavy series. Bolts, nuts and other fasteners used with galvanized items shall be hot dipped galvanized.
heavy series 什么意思啊 |
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