英文關鍵字
assemble
background
beam
business
cargo
carry
chain
construction
crane
elecronic
electric
electrical
electricity
element
equipment
factory
hardware
heavy
high
hightech
hoist
industrial
industry
iron
isolated
large
lift
line
long
machine
manufacturing
metal
modern
module
motor
move
professional
seiling
steel
sun
technical
technology
throw
top
upgrade
wideshot
window