英文關鍵字
basement
boiler
brick
central
checking
circulation
clipboard
controller
controlling
devices
electronic
engineer
engineering
equipment
examining
floor
gate
ground
heating
helmet
indication
industrial
industry
inspector
laser
maintenance
male
man
manometer
measuring
options
overalls
pipe
pipeline
plumber
plumbing
power
pressure
pyrometer
repairman
room
sanitary
shapely
supply
system
technician
technology
verification
water
worker