紡錘
abstraction
alligator
axis
axle
backdrop
background
banner
base
blank
bolt
bush
clamp
clip
clutch
combination
construction
contraption
contrivance
design
device
empty
foot
frame
gadget
hinge
hold
jig
joint
material
mechanism
metal
notepad
page
paper
pattern
plant
reflection
screw
shadow
sheet
stand
structure
support
swivel
technical
texture
thumbscrew
torn