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关注：1
2013-05-23 12:21
求翻译：现场通风情况、密闭时间、测氧前的作业情况等是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
现场通风情况、密闭时间、测氧前的作业情况等
问题补充： |
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2013-05-23 12:21:38
Site ventilation, closed time, the measured oxygen before the operations in
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2013-05-23 12:23:18
On-site time, confined air, oxygen, and the job before, etc.
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2013-05-23 12:24:58
The scene well ventilated situation, the airtight time, measure in front of the oxygen the work situation and so on
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2013-05-23 12:26:38
Spot ventilation, sealing operations before the time, oxygen, and other
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2013-05-23 12:28:18
正在翻译，请等待...
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