英文關鍵字
attract
attraction
background
blue
ceramic
concept
conductivity
conductor
effect
energy
equipment
female
ferromagnetic
field
force
horseshoe
icon
isolated
item
levitation
magnetic
magnetism
meissner
metallic
nitrogen
nobody
perspective
physics
polarity
pole
power
red
resistance
science
scientific
shape
single
steel
super
superconductivity
superconductor
symbol
technology
temperature
template
theory
tool
view
white