機器
abstract
background
ball
bearing
blue
blueprint
built
business
circle
compass
concept
construction
design
detail
details
document
draft
drafting
drawing
education
engineering
equipment
frame
ideas
industrial
industries
industry
instrument
lines
measurement
office
paper
pattern
plan
plans
plant
print
project
radius
ruler
scale
science
shape
sketch
technical
technology
tool
work