英文關鍵字
gel
cell
battery
power
energy
electric
car
technology
industry
electricity
lithium
charger
charge
equipment
low
level
electrical
vehicle
ion
full
green
accumulator
supply
system
auto
electronic
automobile
recharge
transportation
phone
service
mobile
engine
industrial
batteries
metal
maintenance
automotive
fuel
voltage
repair
mechanic
linear
icon
motion
animation
hd
animated