查询词典 luminous

The result showed that the luminous flux for LW white LED radiation power output is 298.7 lm and the total photons are 2.7×1018. If under ideal conditions, one electron-hole pair injected yields one blue photon and the quantum efficiency of the phosphor equals one, the numbers of electron-hole pair must equal to the numbers of white photons.

在理想情况下，注入一个电子-孔穴对产生一个蓝光光子，设荧光粉的量子效率为1，因此，注入的电子-孔穴对数亦等于白光光子数，进而计算出白光LED每辐射1 W的光功率所需的电功率为1.51 W，上述白光LED发光光谱对应的白光LED的电-光转换的理论极限流明效率为197.8 lm/W。

Type 190 Ballistics Longitude-Latitude Photographic Plate is dedicated for night photography of luminous ballistics of conventional or strategical arms.

190弹道经纬照相干版适用于各种常规兵器和尖端武器曳光弹道的夜间拍摄。

Photometry involves the measurement of luminous intensities of light sources and of the illumination of surfaces.

测光学则涉及到光源发光强度的测量方法以及表面照度的测量方法等。

Pointillism Neo-impressionism characterized by the use of tiny, closely spaced dots or points of color that blend to produce a luminous quality.

新印象主义画法，用微小、密集的彩色点混合后产生一种夺目的效果。

The angular extent in a specified plane which contains all the radius vectors of the polar curve of luminous intensity having lengths greater than a specified fraction of the maximum.

在某一平面上，一定角宽范围内所包含的光强极轴曲线上的矢径长度均大于其最大值的某一特定比例，这种情况定义为光束的发散。

A pair of luminous eyes and a precociously indomitable will.

大纲：强是一个4岁的小叛逆者，有一双明亮的眼睛和早熟的不屈不挠的决心。

It is presumable that originally their light was merged in that of the earth's own outer covering of light, and that as her luminous envelope disappeared they became visible, and she came to depend on them for both light and heat.

这是presumable最初合并了它们的光线在这地球的自己的外壳的光，而且因为她的明亮的信封消失了，他们成为看得见，她来到取决於他们对光和热。

white leds have many advantages, including high luminous efficiency, low power consumption, long lifetime and pro-environment, which other traditional lighting sources can not compared.

摘 要：白光led具有发光效率高、功耗低、寿命长、环保等很多其它传统照明光源无法比拟的优势。

The application of the self luminous fire safety sign product has been discussed in the paper as well.

文章介绍了一种新型的蓄光自发光型材料，分析了这种材料的特点，讨论了蓄光自发光型消防安全标志产品的应用。

Materials can be divided into jacquard tapes, transfer tapes, foam tapes, high-elastic cotton tape, elastic tape, luminous tape, reflective belt, PVC belt, PVC pipe, soft tape, nylon belt, POLY belt, PP belt, PP yen rope, colorful belt, laser zone, Symphony belt, woven belt marks, ribbons, etc.; gift products are: Mobile Phone Charm, Mobile Phone rubbed, pocket, non-woven bags, whistles, Epoxy, documents, card kits, easy to pull buckle , tag,, doll toys, mobile phone, LED lights, bottle opener, key ring, mountaineering clasp, spring rope, high-frequency products, such as jewelry·.

材质可分为提花带，热转印带，泡棉带，高弹棉带，松紧带，夜光带，反光带，PVC带，PVC圆管，软胶带，尼龙带，POLY带，PP带，PP圆绳，七彩带，镭射带，幻彩带，织唛带，缎带等；礼品系列产品有：手机吊饰，手机擦，腰包，无纺布袋，口哨、滴胶，证件卡套，易拉扣，吊牌，挂链，公仔玩具、手机来电闪、LED灯，开瓶器，钥匙扣、登山扣，弹簧绳，高周波产品，反光饰品等。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。