prEN ISO 10121-3:2021 评估一般通风用气相空气清洁介质和装置性能的试验方法 第3部分:用于处理室外空气的 GPACD 分类系统(ISO/DIS 10121-3:2021)
Test methods for assessing the performance of gas-phase air cleaning media and devices for general ventilation - Part 3: Classification system for GPACDs applied to treatment of outdoor air (ISO/DIS 10121-3:2021)