wattKK [ˈwɑt] ｜ /ˈwɑt/
GEPT 中高級
C2noun
a unit of power equal to one joule per second; the amount of energy transferred or converted per unit time
The 40-watt bulb in the lamp consumes 40 joules of energy per second.
瓦特（功率單位）
C2noun
the power dissipated by a current of one ampere flowing through a resistance of one ohm
The 100-watt bulb in my room consumes more electrical energy than the 60-watt bulb.
瓦特（電功率單位）