Fire hazard testing -- Part 6: Guidance and test methods on the assessment of obscuration hazard of vision caused by smoke opacity from electrotechnical products involved in fires -- Section 30: Small scale static method -- Determination of smoke opacity
火灾危险试验第6部分:火灾中电工产品烟雾不透明度引起的视觉模糊危险评估指南和试验方法第30节:小规模静态法烟雾不透明度的测定