機器
abstract
architecture
backdrop
background
blue
blueprint
car
concept
construction
design
details
draft
draw
drawing
drive
elements
engine
engineering
gear
gearing
graph
graphic
idea
illustration
industry
ink
inking
interior
linear
machinery
mechanism
modern
motor
old
outline
pen
plan
print
professional
progress
reconstruction
sketch
structure
technical
technology
texture
wheel
work