英文關鍵字
background
blowpipe
blowtorch
build
burner
central
closeup
construction
copper
craftsman
engineer
engineering
factory
fire
fitting
fix
flame
gas
hand
handy
heat
industrial
industry
iron
job
man
manufacturing
pipe
pipelines
pipes
plumber
professional
propane
repair
repairman
roasting
soldering
spark
steel
street
temperature
tools
torch
trees
weld
welder
work
worker