英文關鍵字
assembly
automobile
big
block
cargo
closeup
convenience
device
diesel
disassembly
distribution
drive
effort
electric
electromechanical
engine
engineering
entirely
factory
hard
heavy
huge
indoors
industry
job
machine
machinery
manufacture
manufacturing
metal
moving
overhaul
overturn
plant
repairs
rotate
service
shop
smoothly
stand
steel
storage
technology
tool
transportation
truck
weight
workshop