英文關鍵字
burning
circle
cut
cutter
cutting
details
drilling
engineering
equipment
fabrication
fabricator
factory
industrial
industry
iron
laser
lasercutting
line
machine
machinery
machining
making
manufactured
manufacturing
materials
metal
metallic
metalwork
modern
motion
operation
precision
processing
product
production
robot
robotic
sheet
spark
sparks
steel
technology
tool