英文關鍵字
activity
assemble
assembly
automotive
business
car
chassis
clippers
construction
craft
engineering
equipment
factory
heavy
industrial
industry
instrument
machine
machinery
manufactory
manufacture
manufacturing
mechanic
mechanical
metal
metallic
new
operative
order
part
plant
power
processing
production
pruning
punching
quality
spare
stamp
steel
technology
tool
transportation
vehicle
work