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- useful luminous flux 有效光通
- The ratio of luminous flux at a specific wavelength to the radiant flux at the same wavelength. 发光效率一定波长的光量对同样波长的辐射光量的比例
- Ratio of the absorbed radiant or luminous flux to the incident flux. 吸收的辐射通量或光通量与入射通量之比。
- Ratio of the transmitted radiant or luminous flux to the incident flux. 透过的辐射通量或光通量与入射通量之比。
- Ratio of the utilized flux to the luminous flux leaving the luminaires. 被利用的光通与离开灯具的光通量之比。
- They create a uniform value of luminous flux due to the high frequency used. 由于使用高频，电子镇流器产生均匀的光通值。
- Of a source. Quotient of the luminous flux emitted and the power consumed. 某一光源发出的光通量与其消耗功率的比值。
- The luminous flux per unit area at any point on a surface exposed to incident light. 照度受光照射的表面上任一点单位面积上的通光量
- The lighting effect rate are higher,Ra are very well,similar The Sunshine and long life ,High Luminous Flux. 特点：发光效率高;显色性好;近似于日光;寿命长;光通量高.
- That part of a luminaire designed to reflect the luminous flux of the lamps in required directions by means of specular reflection. 灯具中被设计成利用镜面反射来在所需的方向上反射光源光通量的那部分。
- Of a source. The luminous flux emitted above [below] a horizontal plane passing through the source. 对光源而言。高于[低于]通过光源的水平面而发射的光通量。
- A device in the electrical circuit for varying the luminous flux from lamps in a lighting installation. 安置在电路中以改变照明系统中光源光通量输出的装置。
- The lighting effect rate are higher, Ra are very well, similar The Sunshine and long life, High Luminous Flux. 特点:发光效率高,显色性好,近似于日光,寿命长,光通量高。
- Illuminance, E, is the density of luminous flux incident on a given point of a surface or a plane. 平面上某一点的照度E等于入射到包含这一点的元表积上的光通量除以元表面的面积。
- On a surface. The luminous flux received by the surface from a lighting installation after reflection from other surfaces. 经照明系统中的各反射面反射后到达被照表面的光通量。
- Device in which the phenomenon of reflection is used to alter the spatial distribution of the luminous flux from a source. 利用反射现象来改变光源光通量的空间分布的装置。
- At a point on a surface. Quotient of the luminous flux incident on an element of the surface containing the point, and the area of that element. 照射到表面一点处的面元上的光通量除以该面元的面积。
- The luminous flux determination method for assessing Eustachian tube function is sensitive rapid, and objective, so it is a hopeful appraisal measure. 耳咽管功能的光通量测定方法灵敏、迅速和客观，是一种很有希望的判定手段。
- The uncertainty evaluation and data processing methods for the CCPR key comparisons of luminous intensity and luminous flux unit are introduced. 介绍了光度与辐射度咨询委员会发光强度和总光通量国际比对中的不确定度评定和数据处理的方法。
- Characterzation:high quality quartz bulb,biplanar filament which enables increased illumination,uniform color temperature and luminous flux. 特色：优质的石英泡壳，卓越的双排丝结构，独特的防爆装置，亮度更高，使用更安全。
