機器
abstract
automated
automation
automotive
background
blue
business
construction
detail
electricity
energy
engine
engineering
equipment
factory
fuel
heavy
hole
industrial
industry
iron
machinery
machining
manufacture
manufacturing
mechanical
mechanism
metal
metallic
metalwork
metalworking
modern
motor
pipe
pipeline
piping
plant
power
precision
processing
production
refinery
stainless
steel
technical
technology
tool
tooling
tube
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