英文關鍵字
accuracy
blaze
burn
business
cutting
energy
engineering
equipment
factory
fire
flame
flash
glow
heat
hot
industrial
industry
iron
laser
light
machine
machinery
machining
manufacture
manufacturing
mechanical
metal
metalwork
metalworking
modern
motion
operation
particle
power
precision
processing
production
sheet
spark
sparkle
steel
surface
tech
technology
tool
work
workpiece
workshop