英文關鍵字
accessory
accumulator
adapter
alkaline
appliance
backup
battery
camera
cell
charge
charger
conservation
device
discharge
dslr
electric
electrical
electricity
electron
electronic
electronics
energetics
energize
energy
equipment
generation
ion
lights
lithium
mobile
nickel
phone
photography
polarity
portable
power
proton
recharge
rechargeable
supply
tech
technology
videography
volt
voltage
watt