英文關鍵字
air
blow
blowheater
blower
celsius
close
closeup
cold
comfort
comfortable
converter
demonstration
electric
electricity
energy
equipment
extensive
fan
generator
gun
heat
heater
high
home
hot
industrial
instrument
metal
mobility
model
modern
panorama
portable
power
professional
radiator
rules
security
sequence
technology
temperature
territories
warm
warmer
warmth
wheels
wind
winter
yellow