機器
accuracy
blending
blue
bright
brightly
brown
business
chocolate
color
construction
electricity
equipment
factory
fire
flame
foundry
furnace
gas
glowing
hardening
heat
industrial
industry
ingot
iron
ironwork
kiln
labor
liquid
manufacturing
melting
metal
metallurgy
metalwork
old
poisonous
production
red
sparks
steel
technology
temperature
tempering
tool
torch
vibrant
work
worker