二、来源、种类及其卫生学意义污染来源原发污染（primary pollution）原料重要污染源原料增稠剂、成膜剂、粉体、色素、离子交换水、表面活性剂、添加剂天然动植物成分及其提取物营养丰富油脂、高级脂...
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primary pollution source [环境] 主要污染源
Environmental disasters are primary pollution source in the coal mine area.
地质灾害是煤矿区环境污染的主要发生源。
Therefore, the primary pollution control objective must be point source pollution and diffuse source of domestic wastewater in rural areas.
因此水污染控制必须以点源污染和农村生活面源污染为双重控制目标。
Machine set up kiln dust pollution primary pollution source of cement plant, to set up this text kiln cement plant dust removal these difficult problem carry on research.
为了解决机立窑粉尘污染源问题，针对立窑水泥厂除尘这个难题进行了研究。
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