英文關鍵字
automation
automobile
construction
control
distribution
electric
electrical
element
energy
engine
engineering
engraving
equipment
factory
heavy
industrial
industry
infrastructure
installation
insulation
interior
iron
machine
machinery
machining
manufacture
manufacturing
material
mechanic
mechanical
metal
modern
motor
pipe
pipeline
piping
power
precision
press
pressure
processing
production
reverse
steel
system
technology
tool
treatment
tube
working