英文關鍵字
3d
3dprinter
abstract
accuracy
addition
additive
caucasian
coaxial
created
creation
density
dimensional
hand
holding
human
industrial
innovation
layers
manufacturing
material
melting
metal
metallic
model
modeling
modern
new
object
people
person
printed
printer
printing
progressive
prototype
revolution
shape
solution
spiral
steel
technology
thread
threedimensional
white
wire