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lumen ['lu:min]    添加到生词本 复制网址
基本释义
  • n. 流明,内腔
词形变化
  • 复　数：lu·mens or lu·mi·na
    形容词：lu'men·al, lu'min·al
英英解释

  • 　2个名词解释

    1. a unit of luminous flux equal to the amount of light given out through a solid angle of 1 steradian by a point source of 1 candela intensity radiating uniformly in all directions
      [同] lm, lumen
    2. a cavity or passage in a tubular organ
      [例]
      • the lumen of the intestine