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关注:1
2013-05-23 12:21
求翻译:The concentration of respirable dust shall be determined by dividing the weight of dust in milligrams collected on the filter of an approved sampling device by the volume of air in cubic meters passing through the filter是什么意思? 待解决
悬赏分:1
- 离问题结束还有
The concentration of respirable dust shall be determined by dividing the weight of dust in milligrams collected on the filter of an approved sampling device by the volume of air in cubic meters passing through the filter
问题补充: |
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