英文關鍵字
assembly
component
engineering
equipment
factory
fix
hammer
hammering
hand
heavy
industrial
industry
iron
job
machine
machinebuilding
machinery
man
manufacture
manufacturing
material
mechanic
mechanical
mechanics
metal
metallic
mounting
new
plant
process
processing
production
rack
securing
spiral
spring
steel
stud
tool
transport
vehicle
work
worker
working
workshop