英文關鍵字
safety
control
quality
heat
industrial
manual
production
gear
casting
steel
process
forge
worker
metal
pour
resistance
labor
foundry
molten
footage
fabrication
industry
skilled
protective
equipment
operational
line
plant
helmet
resistant
goggles
machinery
job
furnace
manufacture
manufacturing
cast
heavy
clothing
iron
work
trade
materials
temperature
high
skills
liquid
construction
hazard
smelter
thermal
smelting
metalworker