機器
alloy
aluminum
arrow
background
banner
bedge
board
border
construction
design
direction
frame
futuristic
go
goal
gray
illustration
industrial
industry
iron
ironworks
left
metal
metallic
oblique
old
panel
pattern
plate
point
right
robot
rust
scrape
scratch
shape
sharp
sheet
sign
silver
stainless
steel
tack
tech
technology
template
texture
wall
white