V2EX power draw

Power Draw

释义 Definition

power draw(名词):功耗;耗电量;功率需求。指设备在运行时从电源获取并消耗的电功率,常以 W(瓦特)表示。(在不同语境下也可泛指“电力消耗水平”。)

发音 Pronunciation

/par dr/

例句 Examples

The laptop has a low power draw.
这台笔记本电脑功耗很低。

To extend battery life, the system reduces power draw by lowering the CPU frequency and dimming the display when the workload is light.
为延长电池续航,系统会在负载较轻时通过降低 CPU 频率和调暗屏幕来减少功耗。

词源 Etymology

power 源自拉丁语 potere(能够、力量)经由古法语进入英语,常指“力量/功率”。draw 本义有“拉、取用”的意思,在工程语境里常用来表示“从电源取用(电流/功率)”。两者组合成 power draw,字面即“取用的功率”,引申为“功耗/耗电量”。

相关词 Related Words

文学与著作 Literary Works

  • The Art of Electronics(Horowitz & Hill)在电路设计与电源管理讨论中常出现与 power draw 对应的表述(功耗/电流消耗/电源负载)。
  • Designing Power Supplies for Embedded Systems(相关工程类著作)用于说明嵌入式系统在不同工作模式下的功耗需求与优化方法。
  • Mobile Device Power Management(移动设备电源管理相关著作与论文集)频繁用于描述移动芯片与系统的功耗行为。
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