英文關鍵字
abstract
agent
backgrounds
brown
bulk
bulking
capacity
chaos
chemical
chemistry
close
concepts
crowd
dirt
dry
grained
granular
granulate
gravel
heap
ideas
incoherent
industry
material
mineral
particle
quartz
rotation
sand
sandy
sphere
stirring
stochastic
surface
technology
textured
the
type
variation
wavily
yellow