機器
abstract
advertising
architect
architectural
architecture
background
backgrounds
blue
blueprint
built
cad
chalkboard
city
concentration
construct
construction
contour
contractor
creative
cup
design
designer
development
diagram
document
draft
drafting
drawing
engineer
engineering
gear
graph
graphic
illustration
industrial
industry
layout
line
machinery
mechanical
mechanics
mechanism
object
outline
page
paper
parts
plan
technical
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