| 单词 | 光源 |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔blindsight〕The ability of a blind person to sense the presence of a light source.盲视：盲人感觉到光源的能力美国传统〔candle〕To examine (an egg) for freshness or fertility by holding it before a bright light.对光检查：把（一只鸡蛋）置于一个明亮的光源前以检查它的新鲜程度或受精状况美国传统〔caustic〕Of or relating to light emitted from a point source and reflected or refracted from a curved surface.焦散的：由一个点光源发出并从曲面反射或折射的光的或关于这种光的美国传统〔glim〕A source of light, as a candle.光源：光源，如蜡烛美国传统〔glim〕The illumination given off by such a source.灯光：从某一光源发出的光亮美国传统〔lamp〕A celestial body that gives off or reflects light.自然光源：发光或反射光的天体美国传统〔luminous efficiency〕The ratio of the total luminous flux to the total radiant flux of an emitting source.发光系数：任何光源所辐射的总光通量与该光源总辐射通量之比美国传统〔luminous intensity〕The luminous flux density per solid angle as measured in a given direction relative to the emitting source.发光强度：在光源的某一给定方向上测量的固定单位角度上光通量密度美国传统〔mask〕An opaque border or pattern placed between a source of light and a photosensitive surface to prevent exposure of specified portions of the surface.遮光板：置于光源与感光性表面之间的、防止表面特定部分曝光的边或图形美国传统〔nit〕A unit of illuminative brightness equal to one candle per square meter, measured perpendicular to the rays of the source.尼特：照明亮度单位，相当于每平方米烛光。与光源发出的光垂直来测量美国传统〔otoscope〕An instrument for examining the interior of the ear, especially the eardrum, consisting essentially of a magnifying lens and a light.耳镜，检耳镜：检查耳内部（尤其是中耳）的仪器，主要包括一个放大镜和光源美国传统〔photoaging〕The process by which skin is changed or damaged as a result of exposure to ultraviolet radiation in sunlight and other sources.日照老化，光致老化：皮肤因为暴露在太阳或其它光源的紫外线辐射下而受到改变或损害的过程美国传统〔photolysis〕Chemical decomposition induced by light or other radiant energy.光分解，光解作用：由光或其它光源引起的化学分解美国传统〔photomicroscope〕An instrument consisting of a microscope, camera apparatus, and light source used for making photomicrographs.照相显微镜：由显微镜、照相仪器和光源组成的仪器，用来拍摄显微照片美国传统〔photosensitive〕Sensitive or responsive to light or other radiant energy.光敏的，感光的：对光线或其它光源敏感的或有感应的美国传统〔phototaxis〕The movement of an organism or a cell toward or away from a source of light.趋光性：有机物或细胞移向或躲避光源的运动美国传统〔phototropism〕Growth or movement of a sessile organism toward or away from a source of light.向光性，趋光性：无柄（固着）的生物朝向或远离某光源生长或运动的特性美国传统〔phot〕A unit of illumination equal to one lumen per square centimeter.辐透，厘米烛光：光源单位，相当于每平方厘米一流明美国传统〔radiant〕Astronomy The apparent celestial origin of a meteoric shower.【天文学】 流星群的辐射点：明显的流星雨太空光源美国传统〔searchlight〕An apparatus containing a light source and a reflector for projecting a high-intensity beam of approximately parallel rays of light.探照灯：包括光源和用来投射近乎平行的高强度光束的反光镜的器具美国传统〔shine〕Brightness from a source of light; radiance.光亮：由光源产生的亮光；明亮美国传统〔source〕The only source of light was the fire.唯一的光源就是火。牛津搭配〔spotlight〕An artificial source of light with a strongly focused beam, as on an automobile.探照灯：集中强光的人工光源，如在汽车上安装的探照灯美国传统〔taper〕A source of feeble light.发出微光的光源美国传统〔turn〕Plants tend to turn towards the source of light.植物往往朝向光源生长。剑桥高阶〔useless〕A candle is practically useless as a light source.以蜡烛作为光源实际上没什么用。牛津搭配The only light in the room was a faintly glimmering candle.房间里唯一的光源便是一支发出暗淡微光的蜡烛。剑桥国际The plants turned towards the source of light.植物朝向光源。剑桥国际 |
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