十亿分之一 (shí yì fēn) — one billionth (1/1,000,000,000)

Literally 'one part in a billion' (1/1,000,000,000). Used in science and statistics for extremely tiny quantities or probabilities — not for everyday measurement.

numeral
one billionth (1/1,000,000,000)

예문

  • 十亿分之一
    Zhè zhǒng huà xué wù zhì de nóng dù zhǐ yǒu shí yì fēn.
    The concentration of this chemical is only one billionth.
  • 十亿分之一
    Tā zhōng cǎi piào de gài lǜ bú dào shí yì fēn.
    His chance of winning the lottery is less than one in a billion.
  • 十亿分之一
    Kē xué jiā cè liáng dào shí yì fēn miǎo de shí jiān biàn huà.
    Scientists measured a time change of one billionth of a second.

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