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關注：1
2013-05-23 12:21
求翻譯：認真了解作業場所情況，比如現場通風情況，密閉時間，測氧前的作業情況等等是什么意思？ 待解決
 懸賞分：1
- 離問題結束還有
認真了解作業場所情況，比如現場通風情況，密閉時間，測氧前的作業情況等等
問題補充： |
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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
正在翻譯，請等待...
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