英文關鍵字
accident
aerial
break
builder
burst
city
construction
damage
dirty
emergency
energetic
energy
engineer
engineering
factory
failure
flowing
glove
hazard
heat
heating
hole
industrial
installation
laying
mains
maintenance
mask
open
pipe
pipeline
plumbing
power
pressure
problem
protection
protective
repair
repairing
russian
small
spark
station
steam
steel
summer
supply
system
tool
tube
view
welder
welding
wet
work
worker
workplace