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每种精密产品需要什么样的空气洁净度环境,这既关系到产品的质量,也关系到基建和设备费用的多少.空气洁净度级别,是以每升空气中含有的直径 d_p≥0.5微米的尘粒数量即含尘浓度来衡量的.我国有关技术文件提出
What kind of air cleanliness environment is required for each precision product, which is related to the quality of the product, and also relates to the cost of infrastructure and equipment. The air cleanliness level is the diameter d_p ≥ 0.5 μm per liter of air. The number of dust particles is measured by the dust concentration. The relevant technical documents in our country are proposed.