英文關鍵字
big
component
drill
drilling
engine
engineer
engineering
equipment
factory
hands
hardwired
industrial
industry
instrument
lathe
machine
manufactured
manufacturing
master
mechanical
mechanism
metal
operating
operation
part
piece
plant
process
processing
producing
product
programmed
raw
steel
supervision
supervisor
technological
technology
turn
turning
warehouse
wired
work
worker