Phrase
alternating current
交流电
an electric current in which the direction of flow reverses periodically
- 1.
An electric current in which the direction of flow of the electrons reverses periodically.
电子流动方向周期性反转的电流。
电子流动方向周期性反转的电流。;[化] 交流; 交变电流
In use
Most household appliances run on alternating current from the power grid.
The engineer explained how alternating current changes direction periodically.
We need a converter to change direct current into alternating current for this device.
alternating current + verb
Alternating current changes direction periodically.
交流电定期改变方向。
use + alternating current
This device uses alternating current.
这个设备使用交流电。
alternating current (abbreviation 'AC')
缩写AC常用于技术语境。
Alternating current (AC) is the standard for power grids.
交流电(AC)是电网的标准。
Common mistakes
The power grid supplies alternating electricity.The power grid supplies alternating current.
在中文里,“交流电”的字面翻译是“alternating electricity”,但英语中标准术语是“alternating current”。学习者容易直接逐字翻译,导致用词错误。
The alternating current is a form of electricity.Alternating current is a form of electricity.
在英语中,不可数抽象名词用于泛指时不加定冠词“the”。中文没有冠词,学习者常受此影响而过度使用“the”。
Connections
Confusing words
- direct current
- 直流电 · 两者均为电流类型,但电流方向不同:交流电方向周期性变化,直流电方向恒定。
- alternator
- 交流发电机 · 发音和拼写相似,但'alternating current'是电流类型,'alternator'是产生交流电的装置。
- AC
- 交流电(缩写) · 'AC'是'alternating current'的缩写,但学习者可能误以为'AC'是独立词或表示其他含义。
Word family
- alternate
- 交替 · verb
- alternation
- 交替 · noun
- alternating
- 交替的 · adjective
Learner notes
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 DICTIONARY_API_DEV, ECDICT, WIKTIONARY.