英文關鍵字
equipment
metal
work
factory
worker
construction
industry
production
technology
steel
industrial
manufacture
manufacturing
protection
workshop
safety
professional
plank
detail
frame
line
male
manual
occupation
precision
tool
horizontal
measure
control
engineer
inside
metallic
person
use
bench
carving
circular
conveyor
doubleglass
glass
laor
machine
machinetool
machinery
marker
mechanic
mechanical
overalls
packet
plastic