V2EX nominal capacity

Nominal Capacity

Definition / 定义

nominal capacity名义容量;指设备、系统或装置在标称条件下被规定或标注的容量/产能数值(常见于铭牌、规格书或标准文件中)。它通常用于对比、选型与统计,不一定等同于实际运行中可长期达到的容量(实际值会受温度、老化、负载条件等影响)。该短语在工程语境里也常与 rated capacity(额定容量) 相近,但两者在具体标准中可能有细微区别。

Pronunciation / 发音

/nmnl kpsti/

Examples / 例句

The battery has a nominal capacity of 3000 mAh.
这块电池的名义容量是 3000 毫安时。

Although the nominal capacity is 10 tons per hour, actual output depends on feed quality and operating conditions.
虽然名义产能是每小时 10 吨,但实际产出取决于原料质量和运行条件。

Etymology / 词源

nominal 来自拉丁语 nomen(“名字”),引申为“名义上的、标称的”(按名称或标注而言)。capacity 来自拉丁语 capax(“能容纳的”),表示“容量、能力”。组合起来,nominal capacity 就是“按标注/名义给出的容量”。

<2>Related Words / 相关词汇

Literary Works / 文学作品中的用例

该短语更常见于工程与管理类非虚构写作(教材、标准、技术报告)而非小说诗歌等文学作品中,例如常出现在电力、制造与化工领域的资料里:

  • Operations Management(运营管理/生产管理教材,涉及产能规划时常用到“nominal capacity”)
  • Chemical Engineering Design(化工设计类教材,讨论装置设计产能与运行工况时常见)
  • IEC/IEEE 等技术标准与行业报告(设备规格与标称参数说明中常出现)
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