air source heat pump system
Air Source Heat Pump Unit
风冷热泵机组
空气源热泵机组
空气源热泵热水机组
空气源热泵系统
Air Source Heat Pump Water Heater
Thermo-pump with air source
air pollution source
空气污染源
空气污染〔来〕源
大气污染
空[气]污[染]源
independent source of air supply system
source and sink of air leakage
Stationary air pollution source
urban air pollution source
water source heat pump air conditioning
Air Leakage Rate of Air Preheater
air to air heat recovery unit
air to air missile launching envelope
arctic air [= arctic air mass]
continental air [= continental air mass]
main air port exhaust air
marine air [= marine air mass