英文關鍵字
accident
alarm
assembling
assembly
blowtorch
break
building
business
construction
copper
craft
equipment
factory
fire
fixation
hand
heat
heating
help
hot
industrial
industry
intervention
job
labor
leakage
machinery
machinist
making
man
manufacture
metal
metalwork
night
overalls
parts
person
pipe
pipeline
pit
product
professionals
protection
radiator
repair
rupture
rusty
safety
service
set
shop
skill
skilled
solder
soldering
sparks
supply
system
team
time
together
tool
tools
torch
trade
trench
tube
tubing
two
union
valve
welder
welding
work
worker
workplace