生产性粉尘 meaning in English

industrial dust

Classification of hazard levels due to exposure to industrial dust
生产性粉尘作业危害程度分级
Rules of inspect for classification of hazard levels due to exposure to industrial dust
生产性粉尘作业危害程度分级检测规程
Labour environment monitoring technoligical specification of electric power industry part 2 : monitoring of industrial dust
电力行业劳动环境监测技术规范第2部分:生产性粉尘监测