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关注：1
2013-05-23 12:21
求翻译：All tees and bends shall be of sweep pattern except the square tee which shall be used where draw-off connections are made or where air may be trapped in the upper part of the tee. All fittings and specials shall be malleable cast iron or cast brass to B.S. 143 or B.S. 1256.是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
All tees and bends shall be of sweep pattern except the square tee which shall be used where draw-off connections are made or where air may be trapped in the upper part of the tee. All fittings and specials shall be malleable cast iron or cast brass to B.S. 143 or B.S. 1256.
问题补充： |
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