查询词典 irradiance

In the very near field, the axial irradiance distribution has a variety of subtle effects as changing its aperture parameters.

在很近场区，二元环形孔径的在轴光强分布对孔径结构比较敏感，这些特性使这种孔径在光子学和光纤光学的应用方面具有潜在的价值。

In this paper,starting from the basic radiation theory,calculation formulation for ground irradiance of space diffuse reflection target is presented.

从太阳辐射理论出发，介绍了漫反射目标的地面光照度计算公式。

Finally, on Earth-space paths, by applying a modification of the Rytov method that incorporates spatial frequency filter function under strong fluctuation conditions, a tractable model is developed for the scintillation index of a Gaussian optical beam wave that is valid under moderate-to-strong irradiance fluctuations. The scintillation indexes for collimation Gaussian beam are predicted by this analytic model, based on ITU-R C〓 model.

最后，应用强起伏下引入空间滤波函数的修正Rytov方法，发展了一种易处理且可用于从弱到强起伏地－空路径的高斯波束光波闪烁指数模型；基于ITU-RC〓模型，预测了准直高斯波束的闪烁指数，其结果和理论分析结果相符。

At last, it's illustrated by the theoretic ranging error curve that the relative ranging error is less than that of the irradiance measurement.

最后，给出了文中算法的理论误差曲线，分析表明该测距误差小于辐照度的测量误差。

The merit of the invention are: 1 adopting free curved surface imaging method , three part reflection type Zernike polynomial free curved surface forms short focal distance bigger, relative apertures bigger fields of view angle imaging , rectifying optical aberration much better and its structure is simple; 2 adopting the reflection structure without optical lens, has removed the effect of various chromatic aberration , guarantee the imaging articulation; 3 adopt the design of short focal distance big fields of view angle, focal distance 8 - 15 mm, field of view angles 100 -135 degree, having 120 times multiplications under 250 mm imaging distance, having ultra-thin characteristic property; 4 adopting big relative apertures design ,the relative aperture is 2.0-2.4, having improved the illuminance of flat surface; 5 adopting image space telecentric imaging method , ensures that the image surface irradiance is homogeneous.

本发明的优点是：1采用自由曲面成像方法，三片反射式Zernike多项式自由曲面形成短焦距大相对孔径大视场角成像，更好地校正像差，结构简单；2采用无透镜形式的反射式结构，消除了各种色差影响，保证成像清晰度；3采用短焦距大视场角设计，焦距8～15mm，具有100～135度的视场角，在250mm成像距离下有120倍的放大倍数，具有超薄特性；4采用大相对孔径设计，相对孔径为2.0～2.4，提高像平面上的光照度；5采用像方远心成像方法，保证像面辐照度均匀。

Leaf morphological and physiological acclimation to three irradiance levels (5 %, 25 % and 50 % daylight) were investigated in seedlings of the following four tropical rainforest tree species. Macaranga denticulata and Paravallaris macrophylla are light-demanding species, and Myristica yunnanensis and Garcinia paucinervis are shade-tolerant species.

摘 要 ：研究了西双版纳热带雨林 2 种喜光树种中平树、倒樱木和 2 种耐荫树种云南肉豆蔻、金丝李幼苗叶片光合和形态解剖特征对 3 种不同生长光强（ 5 %， 25 %和 50 %相对光强）的适应。

Finally,the dimensions of the illuminator were optimized based on the irradiance model.

最后，根据简化的照度模型对光源的几何参数进行优化。

This is a global scale factor applied to the irradiance contribution of the environment.

这是一个全局倍增的因素应用于辐射贡献的环境。

So it is very important to found a higher accuracy standard of spectral irradiance and spectral radiance.

因此建立一个高精度的光谱辐照度和光谱辐亮度标准是非常必要的。

This is the global scale factor applied to the intensity of the irradiance during rendering.

这是全局倍增的因素应用到的辐射强度在渲染。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。