機器
ac
air
air conditioner
air conditioning
auto
automobile
automotive
background
business
car
car service
check
compressor
condition
conditioner
conditioning
cooling
detection
engineer
equipment
hvac
industry
leak
liquid
maintenance
mechanic
mechanical
meter
part
power
pressure
refrigerant
refrigeration
refrigerator
repair
repairman
service
servicing
system
technical
technician
technology
tool
tools
transport
transportation
vehicle