lumen 的定义
plural lu·mens, lu·mi·na [loo-muh-nuh]. /ˈlu mə nə/.
- Optics. the unit of luminous flux, equal to the luminous flux emitted in a unit solid angle by a point source of one candle intensity. Abbreviation: lm
- Anatomy. the canal, duct, or cavity of a tubular organ.
- Botany. the cavity that the cell walls enclose.
更多lumen例句
- That’s why it’s best to look at the lumens instead of the wattage.
- Besides lumens, the biggest factor for finding the best floodlight is position.
- The number of lumens needed for an outdoor floodlight is between 700 and 2,5000.
- Be sure to pay attention to the lumens or wattage of a light fixture – no dimly lit spaces here.
- For huge spacesA junk-drawer flashlight’s brightness measures in the hundreds of lumens.
- That reminds me, I'd better arrange a debate on immigration for the Lumen.
- "She made a splendid impression on the Lumen," Colburn went on.
- In the second main variety of gland the secretory portion is enlarged and the lumen variously increased in size.
- At about the time when a lumen appears in the Oviduct the first traces of the Wolffian duct become visible.
- While undergoing this change of position it also acquires a lumen, but ends blindly both in front and behind.