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关注：1
2013-05-23 12:21
求翻译：Note: For straight pipe, OPTION #1 is the same as OPTION #2. For elbows, OPTION #1 should apply for forged and welded fittings where the bend cross-section can be considered essentially circular.是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
Note: For straight pipe, OPTION #1 is the same as OPTION #2. For elbows, OPTION #1 should apply for forged and welded fittings where the bend cross-section can be considered essentially circular.
问题补充： |
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