英文關鍵字
aluminum
arc
assembly
builder
built
car
construction
cover
craftsman
electric
electricity
engineering
equipment
factory
fire
fix
flash
garage
gas
gloves
industrial
industry
inert
instrument
iron
job
joint
machine
maintenance
manual
manufacturing
men
metal
metalwork
nonthaburi
occupation
people
professional
protection
radiator
repair
repairs
safety
skill
solder
soldering
spark
steel
technician
technology
thai
thailand
tool
tungsten
use
vehicle
weld
welder
welding
work
worker
workplace
workshop