mu

IPA/mjuː/
KK[mˈu]IPA/mjuː/

mu — 名詞

  • musingular
  • musplural

1. the Greek alphabet has 24 letters, and mu — written as μ (lowercase) or Μ (upper

1.名詞A2
釋義

希臘字母 μ

希臘字母表第12個字母

the Greek alphabet has 24 letters, and mu — written as μ (lowercase) or Μ (uppercase) — is the 12th one. In science and maths, the symbol μ has a few common uses: it can mean the average of a whole group, the amount of friction between surfaces, or the prefix for one millionth (micro-).

例句

Indra learned that the Greek letter mu stands for the mean of a whole population.

Indra 學到希臘字母 μ 代表整個母群體的平均值。

μ = population mean in statistics

Mrs. Chen wrote μ = 0.4 for the friction between a cardboard box and the floor.

物理課上，陳老師寫下 μ = 0.4，表示紙箱和教室地板之間的摩擦力。

μ = coefficient of friction in physics

文法句型

the letter mu

mu + noun (mu particle)

用法筆記

Mu is usually written in its Greek form μ (lowercase) or Μ (uppercase) rather than spelled out as 'mu' in English text. The uppercase form is rarely used; the lowercase μ appears constantly in scientific and mathematical writing. When reading aloud, say 'myoo' (UK) or 'mew' (US).

常見錯誤

❌The average is represented by the Latin letter u.
✅The average is represented by the Greek letter mu (μ).
💡The Roman letter 'u' and the Greek letter 'μ' look similar but are different characters.
❌A micrometer is 1,000 metres.
✅A micrometre (μm) is one millionth of a metre.
💡The prefix micro- (μ) means one millionth, not one thousandth.