VDI 3492 Blatt 1-1991
Measurement of inorganic fibrous particles in ambient air; scanning electron microscopy method
Messen anorganischer faserfoermiger Partikel in der Aussenluft; Rasterelektronenmikroskopisches Verfahren
VDI 3492 Blatt 1-1991相似标准
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ISO 14966:2002 环境空气.无机纤维颗粒的数值浓度的测定.扫描电子显微镜检查法