洁净度等级N=6的洁净室内空气中,粒径大于或等于0.5μm的悬浮粒子的最大允许浓度值为下列哪一项?
2023-09-12
A.35200pc/m3
B.3520pc/m3
C.1000000pc/m3
D.6pc/m3
参考答案:A
B.3520pc/m3
C.1000000pc/m3
D.6pc/m3
参考答案:A
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2023-09-12
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