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lumen

英 ['lu?men] 美['lum?n]
  • n. 流明(光束的能量單位);(管狀器官內(nèi)的)內(nèi)腔

GRE擴(kuò)展詞匯

詞態(tài)變化


復(fù)數(shù):?lumina;

助記提示


1. 音譯“流明”

中文詞源


lumen 流明(光通量單位)

來自拉丁語lumen,光亮,光線,詞源同light.

英文詞源


lumen (n.)
unit of luminosity, 1897, coined 1894 by French physicist André-Eugène Blondel (1863-1938) from Latin lumen "light," related to lucere "to shine" (see light (n.)).

雙語例句


1. The conical configuration of the appendix makes obstruction of the lumen unlikely.
闌尾呈圓錐形,不易造成腔內(nèi)梗阻.

來自辭典例句

2. One solution flows through the central lumen of the fibers.
一種溶液從纖維的中心腔流過.

來自辭典例句

3. Reconnect main lumen to suction source.
請(qǐng)將主腔管道連接吸引源.

來自辭典例句

4. The innermost region of cotton is called lumen.
棉纖維的最內(nèi)層組織叫中腔.

來自辭典例句

5. A lumen is a measure of the rate of emission of light energy.
流明是光能放射率的量度單位.

來自辭典例句