機器
abstract
architectural
backdrop
black
blueprint
brochure
build
built
car
construct
cover
diagram
document
drafting
electrics
elevator
engine
engineer
engineering
geometry
graphic
hydraulics
industry
layout
line
locomotive
machinery
maintenance
mathmatical
mechanical
motor
outline
page
paper
pattern
perspective
pneumatics
print
printout
projection
scheme
splash
technical
technology
template
texture
vector background
wireframe