lumen

FREQ #36652

n. 流明, 腔 [医] 腔, 流明(光通单位)

发音

UK /ˈluːmən/
US /ˈlumən/

词形变化

lumens 复数 lumens lumina lumina 复数

释义与例句

n.
  1. 1.

    In the International System of Units, the derived unit of luminous flux; the light that is emitted in a solid angle of one steradian from a source of one candela. Symbol: lm.

    流明

    物理
  2. 2.

    The cavity or channel within a tube or tubular organ.

    内腔

    医学
  3. 3.

    The cavity bounded by a plant cell wall.

    生物 植物学
  4. 4.

    The bore of a tube such as a hollow needle or catheter.

    医学

词汇关系

名词

同义词 1

LM

上位词 2

cavity cavum

相关短语

lumen second [电] 流明秒 lumen method [电] 流明法 lumen seconds

词源

Borrowed from Latin lūmen (“light, an opening”). Use as a unit was first adopted by French physicist André Blondel in 1894.

来源：wiktionary