siemens

siemens — 名詞

1. the scientific unit used to measure how easily electricity can move through an o

1.名詞C1
釋義

西門子

電導的標準單位，符號為 S

the scientific unit used to measure how easily electricity can move through an object or substance. One siemens equals the rate of flow of one ampere when one volt of electrical pressure is applied.

例句

Devika checked the cable's rating; its conductance was 50 siemens.

Devika 檢查了電線的規格，其電導值為 50 西門子。

collocation: measured in siemens

The datasheet listed the output conductance as 0.2 siemens.

這份資料表列出輸出電導為 0.2 西門子。

invariant plural: 0.2 siemens

常見搭配
  • measured in siemens
  • siemens per metre
  • conductivity in siemens
同義詞
  • mho

    older, non-SI name; the word 'ohm' spelled backwards

用法筆記

The plural form is the same as the singular: '5 siemens' (not '5 siemenses'). The symbol is an uppercase S — for example, '10 mS' means 10 millisiemens. The unit is the reciprocal of the ohm: conductance (in siemens) = 1 ÷ resistance (in ohms).

常見錯誤

The resistor has a siemens of 100.
The resistor has a conductance of 100 siemens.
siemens is a unit of measurement, not the name of the property being measured.
慣用語

Sir William Siemens

idiom

a biographical entry for the German-born British engineer and inventor (1823–1883) after whom the Siemens family industrial company is named. The SI unit of conductance (siemens) was actually named after his older brother, Ernst Werner von Siemens.

Sir William Siemens developed the regenerative furnace, which saved large amounts of fuel in steel-making.

同根字

  • conductance
    名詞C1
  • conductivity
    名詞C1
  • conductive
    形容詞B2

常見搭配

名詞搭配

  • conductance (in siemens)
  • value (in siemens)
  • conductivity (in siemens per metre)

常用片語

  • siemens per metre

介系詞搭配

  • in siemens
  • of siemens