Home / Standards / GB/T 33633-2017 GB/T 33633-2017 Abolished Vacuum technology—Positive-displacement vacuum pump—Measurement of water vapour tolerance 真空技术 容积真空泵 水蒸气容限的测量 Standard Type GBT ICS 23.160 CCS J78 Status 废止 Issue Date 2017-05-12 Implementation 2017-12-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A