V2EX milliohm

Milliohm

释义 Definition

milliohm毫欧,电阻的单位,等于 0.001 欧姆(\(10^{-3}\ \Omega\))。常用于描述非常小的电阻值,例如导线、电池内阻、接触电阻或分流电阻。

发音 Pronunciation (IPA)

/mliom/

例句 Examples

The shunt resistor has a resistance of 2 milliohms.
这个分流电阻的阻值是 2 毫欧

Even a few milliohms of contact resistance can cause significant voltage drop at high current.
在大电流情况下,即使只有几毫欧的接触电阻,也可能造成明显的电压降。

词源 Etymology

由前缀 **milli-**(表示“千分之一”,源自拉丁语 mille,意为“千”)+ ohm(欧姆,电阻单位,来自德国物理学家 Georg Simon Ohm 的姓氏)构成,字面意思就是“千分之一欧姆”。

相关词 Related Words

文献与作品 Literary / Notable Works

  • The Art of Electronics(Horowitz & Hill)常在分流测量、接触电阻等语境中使用“milliohm”级别描述。
  • Electric Circuits(Nilsson & Riedel)在电阻测量与电路分析中出现毫欧量级的讨论。
  • ARRL Handbook for Radio Communications(美国业余无线电联盟手册)涉及连接、导线与接地等场景中毫欧电阻的影响。
  • IEEE 相关标准与工程文档(如测量与互连规范)经常用“milliohm”标注低阻抗/低电阻要求。
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