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滤膜质量法
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滤膜质量法
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滤膜质量法
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filter mass method
滤膜质量法
采集一定体积的含尘样品,将粉尘阻留在已知质量的聚氯乙烯纤维滤膜上,根据采样后滤膜的增量及采样体积,求出单位体积空气中粉尘质量的方法。
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