Home / Standards / GB/T 19933.4-2014 GB/T 19933.4-2014 Active Earth-Earth-moving machinery―Operator enclosure environment―Part 4: Heating, ventilation and air conditioning (HVAC) test method and performance 土方机械 司机室环境 第4部分：采暖、换气和空调（HVAC）的试验方法和性能 Standard Type GBT ICS 53.100 CCS P97 Status 现行 Issue Date 2014-07-24 Implementation 2015-01-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A