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关注：1
2013-05-23 12:21
求翻译：认真了解作业场所情况，比如现场通风情况，密闭时间，测氧前的作业情况等等是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
认真了解作业场所情况，比如现场通风情况，密闭时间，测氧前的作业情况等等
问题补充： |
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2013-05-23 12:21:38
A good understanding of the workplace field ventilation of confined time, the measured oxygen before the operations in
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2013-05-23 12:23:18
Careful Understanding job sites, such as on-site air, oxygen, and confined time before the operation, etc.
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2013-05-23 12:24:58
Understood earnestly the work place situation, for instance the scene well ventilated situation, the airtight time, measures in front of oxygen work situation and so on
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2013-05-23 12:26:38
Careful understanding of workplace situations, such as ventilation, sealing time, logging operations prior to the oxygen, and so on
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2013-05-23 12:28:18
正在翻译，请等待...
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