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关注：1
2013-05-23 12:21
求翻译：除必要的开口外井道应当完全封闭是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
除必要的开口外井道应当完全封闭
问题补充： |
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2013-05-23 12:21:38
In addition to the necessary openings outside wells should be completely closed
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2013-05-23 12:23:18
In addition, the opening should be fully closed wells road
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2013-05-23 12:24:58
Besides the essential aperture the well road must seal up completely
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2013-05-23 12:26:38
Apart from the necessary open shafts should be fully closed
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2013-05-23 12:28:18
except the necessary opening wells road should be fully closed;
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