英文關鍵字
architecture
background
bearing
black
blueprint
building
caliper
circle
closeup
cnc
collection
construction
drafting
drawing
engine
engineering
equipment
flat
house
improvement
industrial
industry
iron
machine
maintenance
mechanical
metal
metallic
nobody
objects
occupation
paper
part
people
piston
plan
repair
repairing
round
set
shape
sketch
stainless
steel
technology
transportation
vehicle
wheel
white