Word · Frequency #9271
watt
瓦特（功率单位）
a unit of power equal to 1 joule per second
- 1.
In the International System of Units, the derived unit of power; the power of a system in which one joule of energy is transferred per second.
国际单位制中功率的导出单位；每秒钟转移一焦耳能量的系统功率。
国际单位制中功率的导出单位；每秒钟转移一焦耳能量的系统功率。；瓦(特)；[化] 瓦; 瓦特
In use
This light bulb consumes 60 watts of electricity.
A typical microwave oven uses around 1000 watts.
The amplifier can deliver 200 watts per channel.
[number] watt(s)
表示功率数值时，数字后直接跟单位，大于1时用复数形式watts。
The light bulb uses 60 watts.
这个灯泡使用60瓦。
a [number]-watt [device]
用作形容词修饰设备，数字与单位之间加连字符。
She bought a 100-watt amplifier.
她买了一个100瓦的放大器。
[number] watts per [unit area]
表示单位面积上的功率密度，per后接面积单位。
The sunlight intensity is 1000 watts per square meter.
阳光强度是每平方米1000瓦。
Common mistakes
How many what does this bulb use?How many watts does this bulb use?
学生因发音相似将‘watt’误拼为疑问词‘what’，应改为正确的功率单位‘watt’的复数形式‘watts’。
This device consumes 500 watt.This device consumes 500 watts.
‘watt’为可数名词，数量大于1时需使用复数形式‘watts’。
Connections
Collocations
- 60-watt bulb
- 60瓦灯泡
- I replaced the old bulb with a 60-watt one.我把旧灯泡换成了60瓦的。
- 100-watt light
- 100瓦灯
- The room requires a 100-watt light for sufficient brightness.这个房间需要100瓦的灯才能足够亮。
- low-watt appliance
- 低功率电器
- Low-watt appliances help reduce electricity bills.低功率电器有助于减少电费。
- watt output
- 功率输出
- The speaker's watt output is 200 watts per channel.该音箱每声道功率输出为200瓦。
- watt consumption
- 功耗
- This device has a watt consumption of 500 watts.该设备功耗为500瓦。
Pop culture & quotes
Learner notes
Memory Tip
联想灯泡上的“60W”标记，W就是瓦特（watt），功率越大灯光越亮。
Context & Register
语域：neutral 常见场景：physics、electricity、engineering 瓦特是功率单位，通常用于科技、工程和日常电器参数说明中。
Pronunciation & Spelling
All six words are genuine rhymes with 'watt' (IPA /wɒt/). Many common words like 'that', 'cat', 'hat' have the spelling pattern '-at' but are pronounced with /æt/, not /ɒt/, so they are not rhymes. Be careful not to confuse the spelling.
Usage priority
Collins 词频等级为 1，建议结合例句记忆，而不是只背中文释义。
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.