Yahoo奇摩字典 網頁搜尋

  1. point source

    • IPA[point sôrs]
    • n.
      a source of energy, such as light or sound, which can be regarded as having negligible dimensions.;a localized and stationary pollution source.
    • noun: point source, plural noun: point sources

    • 相關詞
    • n.
      a source of pollution that issues from widely distributed or pervasive environmental elements: cattle are the leading non-point source of pollution in Canada today

    Oxford Dictionary

    • 更多解釋
    • n.
      a source of energy, such as light or sound, which can be regarded as having negligible dimensions.

    Oxford Dictionary