kilowatt

kilowatt — noun

1. a standard unit that tells you how much electrical power a device, machine, or s

1.名詞B1
釋義

a standard unit that tells you how much electrical power a device, machine, or system uses or produces; one kilowatt equals 1,000 watts and is roughly enough to run a small electric heater at full heat.

例句

Beatriz installed solar panels that produce up to 4 kilowatts of electricity on a sunny day.

collocation: [number] + kilowatts of + [electricity/power]

A 3-kilowatt generator kept the emergency lights running during the storm.

hyphenated compound modifier: [number]-kilowatt + [noun]

同義詞
  • watt

    the base unit; 1 kilowatt = 1,000 watts. Use 'watt' for small devices (a 60-watt bulb) and 'kilowatt' for larger appliances (a 2-kilowatt heater).

  • megawatt

    a much larger unit; 1 megawatt = 1,000 kilowatts. Used for power stations, large factories, or wind farms rather than household appliances.

文法句型

[number] + kilowatt(s) + of + [power/electricity]

[number]-kilowatt + [noun]

用法筆記

Often abbreviated to kW in writing. When used as a compound modifier before a noun, add a hyphen between the number and 'kilowatt' (e.g., a 5-kilowatt motor, a 2-kilowatt heater). Distinguish from kilowatt-hour (kWh), which measures total energy used over time, not instantaneous power.

常見錯誤

❌The microwave uses 1.2 kilowatt.
✅The microwave uses 1.2 kilowatts.
💡Kilowatt is a countable noun; use the plural form when the number is not exactly 1.
❌My home uses 10 electricity kilowatts daily.
✅My home uses 10 kilowatts of electricity daily.
💡When connecting kilowatts to what is being measured, use 'of' (kilowatts of power / of electricity).