V2EX kilowatt

Kilowatt

定义 Definition

n. 工程与物理中的功率单位,符号为 kW,等于 1,000 watts。它表示能量转换、传输或消耗的速率,常用于描述电器用电功率、电机输出功率、发电设备容量等。学习时要注意 kilowatt 表示“功率”,而 kilowatt-hour 表示“能量”。

发音 Pronunciation

英式 /klwt/;美式 /klwt/

例句 Examples

The heater uses two kilowatts of power.
这台取暖器消耗两千瓦的功率。

A small solar system may produce several kilowatts under good sunlight conditions.
在良好的阳光条件下,一套小型太阳能系统可能产生数千瓦的功率。

词源 Etymology

kilo-watt 组成。kilo- 来自希腊语,表示“千”;watt 是功率单位,得名于苏格兰工程师 James Watt。因此 kilowatt 字面意思是“一千瓦特”。

相关词 Related Words

科学文献用例 Scientific Usage

  • 在物理和工程教材中,用于说明功率、能量转换率和电力系统容量。
  • 在电气设备说明书和实验报告中,用于标示设备的额定功率或实际消耗功率。
  • 在能源、建筑和可再生能源领域的技术文件中,用于描述太阳能板、发电机、充电设备或电网负载的功率规模。
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