英文關鍵字
black
closeup
coil
condenser
connect
cool
detail
electrical
engineering
equipment
factory
freon
fridge
industrial
industry
iron
join
machine
machinery
manufacture
manufacturing
mechanical
metal
operate
part
plant
pozis
precision
process
production
refrigeration
refrigerator
robotic
roll
rubber
steel
stripe
surface
technic
technology
temperature
tool
white
workshop