機器
background
bit
boring
color
colorful
construction
contour
control
design
drilling
energy
engineering
equipment
flat
fuel
gas
gasoline
hole
icon
illustration
industrial
industry
isolated
leak
line
linear
mining
natural
oil
outline
petroleum
pipe
pipeline
platform
plumbing
power
pressure
rig
set
symbol
technology
tool
tube
water
well
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