| 释义 |
〔lighten〕To make light or lighter; illuminate or brighten.照亮或使明亮；聚光或使明亮〔spotlight〕A lamp that produces such a light.聚光灯：产生聚光效果的灯〔condenser〕A mirror, lens, or combination of lenses used to gather light and direct it upon an object or through a projection lens.聚光器：用于聚光并将光引向某物体或通过一凸透镜组的镜子、透镜或透镜组〔speed〕The capacity of a lens to accumulate light at an appropriate aperture.聚光率：透镜在合适的镜径下聚光的能力 |