英文關鍵字
abstract
arc
backdrop
background
ball
beams
black
blue
bright
circle
coil
colorful
computer
conductivity
connections
current
dark
electric
electricity
electrode
electromagnetic
energy
experiment
flame
fusion
gas
glow
highfrequency
highvoltage
ions
laboratory
lamp
light
lightning
magic
motion
oscillator
pattern
physics
plasma
polarity
power
pulsating
ray
reaction
red
research
resistance
science
sparkles
sphere
star
technology
tesla
thunder
voltage
wattage