英文關鍵字
metallic
smelting
material
industry
casting
safety
protective
job
hardhat
hazardous
metal
manufacturing
professional
liquid
occupation
heavy
flow
equipment
working
real
operation
infrastructure
labor
foundry
hot
hightemperature
construction
shaping
technology
craftsmanship
intense
iron
foundryman
flames
melting
workplace
people
production
factory
industrial
metalwork
handling
automation
steel
skill
gear
engineering
forge
workwear
worker
workshop
process
craft
energy
furnace
manual
artisan
heat
alloy
innovation
molten
metallurgy