求翻译：认真了解作业场所的情况，如现场通风情况，密闭时间，测氧前的作业情况等，必要时要求设计部门或申请测氧部门提供舱容图是什么意思？

A good understanding of the workplace, such as site ventilation, closed time, the measured oxygen before the job situation, if necessary, require the design department or application for measuring oxygen departments tank capacity Figure

Careful Understanding job sites, such as on-site air, oxygen, and confined time before such as the job situation and, if necessary, to the design department, or application departments provide oxygen tanks fault map

Understood earnestly the work place the situation, like the scene well ventilated situation, the airtight time, measured in front of oxygen work situation and so on, when necessity requests the design department or applies to measure the oxygen department provides the capacity plan

Careful understanding of workplace situations, such as ventilation, sealing time, before the oxygen, such as jobs and, if necessary, request or application for measuring oxygen provides capacity plan

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