英文關鍵字
generator
mobile
electric
gasoline
tool
equipment
portable
power
engine
voltage
emergency
fuel
electricity
diesel
outdoor
energy
gas
work
transportable
plug
supply
technology
motor
alternator
button
petrol
machine
mobility
home
device
service
light
object
watt
tank
source
line
generation
maintenance
generating
white
industrial
outdoors
instrument
standby
isolated
industry
autonomous
mechanic
background