英文關鍵字
brand
bright
build
business
cargo
color
construction
constructions
crane
detail
device
drive
electrical
engine
equipment
experimental
factory
gear
green
hard
heavy
industrial
industry
instrument
iron
job
large
machine
machinery
manufacture
mechanism
metal
metalwork
motor
new
powerful
process
professional
rail
rotation
steel
structures
system
testing
tool
truck
wheel
works
workshop