洁净气体灭火系统
clean gas fire exting uishing system
clean gas fire extinguishing system
气体-气体热交换顺
gas-to-gas heat exchanger
空气洁净度
cleanliness
air cleanliness
purification degree of air
空气洁净度等级
classifi cation of clean room
不凝性气体净化器
non condensable gas purger
覆盖气体净化系统
CGCS (cover-gas cleanup system
cover-gas cleanup system
blanket gas clean-up system