光谱特性

Photosensitive audion adopt a type to be that 2 CU2B photodiode and types are 3 DU33 is an object of study , characteristic property composes in reply spectrum characteristic property from the photodiode illumination , characteristic property and corresponding wavelength carry out photosensitive audion volt-ampere characteristic property , illumination experiment.

采用型号为2CU2B的光敏二极管和型号为3DU33的光敏三极管作为研究对象，从光敏二极管的光照特性和光谱特性，光敏三极管的伏安特性、光照特性和相应波长进行试验。

This paper reports results of Tin doped fibre pumped by a semiconductor laser diode as an optical source for methane gas detection. The spectral characteristics of the Tm doped fibre pumped by the 788 nm laser diode is studied experimently and the fibre source is used in a correlation spectroscopy measurement system.

报道了以半导体激光器泵浦掺Tm3+光纤为光源的甲烷气体相关光谱检测系统，研究了788 nm波长泵浦下掺Tm光纤光源的一些光谱特性，并在实验上用这种光源及系统对甲烷气体作了测量。

Based on this system, some fundamental characteristics including the output power characteristics, the emission spectrum characteristics, as well as the suppression of ASE are investigated in detail.

在此基础上，重点对该窄线宽放大系统的一些基本特性进行了研究，如输出功率特性、发射光谱特性及ASE的抑制等。

Based studies were done on radiation spectrum, voltage to current character and modulation property of white LEDs when they are used as optical transmitters. Then the configuration and systematic design techniques are concentrated concerning white LED lighting source communication with numerical analyses and computer simulations done as well as high speed modulation techniques, visible light receiver design and means to alleviate inter symbol interference along with background noise problem.

在对白光LED用作通信光源时的光谱特性、伏安特性、调制特性等物理特性做深入分析的基础上，重点研究了白光LED照明光源通信系统的组成结构和系统设计，进行了数学计算分析模拟，并设计出了白光LED高速调制电路和可见光接收电路，并就如何削弱码间串扰和背景光噪声对通信系统的影响进行了讨论分析。

The characteristics of photoluminescence and excitation spectra of the obtained glasses were investigated.

研究了制得玻璃的发射光谱和激发光谱特性。

As a result, noticed increased spectral response curve and filters the difference between spectral characteristics are very important.

因此，注意到密度计的光谱反应曲线与滤色片的光谱特性之间的不同是非常重要的。

The tolerance property of PIF is analyzed detailedly, and spectral characteristic and angular property are tested by experiment.

详细分析了偏振干涉滤光片的容差特性，并着重测试输出光谱特性和角度特性，均得到与理论设计相吻合的实验结果。

Chlorophyll contents and xanthophyll cycle pool calculated from reflectance were closely related with cucumber tolerance to salt stress, and reflectance characteristics could be used as index to evaluate cucumber cultivar tolerance to salt stress.

利用光谱反射指标得出的叶绿素含量、叶黄素循环库的大小与黄瓜的盐害程度及不同品种的耐盐程度有密切关系，反射光谱特性可以用来作为筛选黄瓜耐盐的生理指标。

The research work is mainly focused on the phase mask method, the characteristics of near-field diffraction of the phase mask are analyzed with scalar diffraction theory, and the properties of grating formation are studied specifically when the writting light beam incidents normally and slantly, respectively, with some important conclusions derived.

我们首先采用按理想波导模展开的方法建立了FBG中的模式耦合方程，并用模式耦合理论研究了FBG中的模式耦合现象，导出了FBG的反射光谱和透射光谱的理论表达式，采用数值模拟计算的方法研究了FBG的结构参数对其反射光谱特性的影响，得出了若干重要结论。

Taking Qixia City as the research region, using supervised classification of the flowering apple digital photos to extract the target information of the ratio of apple flower/leaf and apple flower/tree, this paper carries out the correlation analysis of the ratio data with synchronization hyperspectral detection data, to determine the spectral features and sensitive spectrum wave band of the apple florescence.

以栖霞市为研究区，利用苹果花期数码照片监督分类，提取苹果花树比和花叶比指标信息，通过与同步高光谱探测数据的相关分析，研究苹果树花期光谱特性，确定其敏感的光谱波段。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。