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helical
corrugation
volutes
semicircles
spirals
spiral pattern
whirlpool pattern
concentric
spiral binding
spirally
undulating
spiral background
corrugations
sinuous
curvatures
fibrils
spiralling
waves circles
waveguides
strigulated
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GIF 动图
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helical
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fibrils
semicircles
nanowires
sinuous
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extrusion
waveguides
corrugations
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saturn's rings
concentric
saturn rings
anisotropic
spiralling
semicircles
spirally
ellipticity
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spirals
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anisotropic
concentric
spiral background
corrugation
spiralling
abstract backgrounds
helical
parametric
background abstract
isotropic
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corrugation
corrugations
corrugated
corrugated sheet
radiator
ventilation grille
radiators
louvered
ventilation grid
fluted
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semicircles
helical
spirally
extrusion
curved ribbon
spiral binding
spirals
spiralling
concentric
corrugation
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corrugation
fiberglas
semicircles
helical
corrugations
concentric
radius
corrugated sheet
spiral background
undulating
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metamaterials
waveguide
ventilation grid
microstructures
waveguides
intergrated
anisotropic
heterostructure
wavefronts
nanostructure
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semicircles
spiralling
volutes
whirlpool pattern
spirally
concentric
ellipses
curvatures
spirals
spiral pattern
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helical
corrugations
extrusion
corrugation
extrusive
strigulated
whirls
fibers
spirally
nanowires
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helical
turbomachinery
extrusion
spiral bevel gears
formes
extrusive
extruding
ellipsoids
hyperboloid
semicircles
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semicircles
concentric
anisotropic
corrugations
ellipticity
corrugation
ellipsometry
sphericity
ellipses
saturn rings
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corrugation
anisotropic
helical
corrugations
isotropic
slinky
aramid
wavelet
hyperboloid
linien
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corrugation
corrugations
metamaterials
corrugated sheet
microstructures
heterostructures
ferrite
nanostructures
nanowires
denticles
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corrugation
corrugations
corrugated sheet
helical
anisotropic
extrusion
parametric
splines
fluted
wavefronts
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spiralling
concentric
anisotropic
spirals
wavefronts
helical
extrusion
spirally
spiral background
undulated
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corrugations
corrugation
splines
anthracite
extrusions
monochromes
velodromes
ferrite
lines
lignes
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corrugation
corrugations
corrugated sheet
semicircles
undulations
helical
anisotropic
quonset
curvatures
undulating
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microstructures
nanostructures
nanowires
nanostructure
heterostructure
heterostructures
corrugation
microfabrication
wavefronts
metamaterials
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corrugation
corrugations
extrusion
corrugated sheet
extrusive
turbomachinery
louvers
extrusions
helical
curved ribbon
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waves circles
wavelet
rippled
vortices
helical
wave pattern
rippling
corrugation
spiral pattern
ripples