反射

This paper analyzed the reflection spectrum of loess on different granule diameters and irradiant angles. We found that the influence of loessial dense degree on its polarized reflection changed along with loess's moisture content and angle of incidence.

本文以黄土作为代表性土壤，通过对不同粒径，不同光线入射角黄土反射光谱的分析，我们发现黄土的致密程度对其偏振反射光谱的影响与黄土自身的含水量以及入射角相关。

It was decided to fit the reflector screen into a slot fixed to the inside of the hood, and incorporate the sun screen at the rear operated by a knurled knob.

于是决定把反射器安装在保护罩内侧固定的细槽中，同时在反射器的背后组合一个有压花旋钮操作的遮阳挡板。

It was decided to fit thereflector screen into a slot fixed to the inside of the hood, andincorporate the sun screen at the rear operated by a knurled knob.

于是决定把反射器安装在保护罩内侧固定的细槽中，同时在反射器的背后组合一个有压花旋钮操作的遮阳挡板。

When a collimated laser beam illumines the curved liquid surface by the wetting rod, the special reflective patterns, which correspond to the boundary light reflection, can be produced. In fact, there is the pattern with dark central region and the high visibility diffraction fringes around, and the radius of dark region largen with the reduced radius of the incident beam.

当平行激光束垂直入射到由细棒润湿效应引起的弯曲液面上时，边界反射产生特殊的反射图样，图样的中心为圆形暗场，周围有清晰的衍射条纹，并且暗场的半径随入射光束半径的缩小而变大。

The responses were categorized into passive (laryngealclosure, laryngospasm, and apnea) and active (cough, expirationreflex, and swallowing reflex) responses.

喉部的反应分为被动（喉头关闭，喉痉挛，呼吸暂停）和主动（咳嗽，呼气反射，吞咽反射）两类。

This model builds up the relationship between the levitation capabilities and the geometric parameters of a single-axis acoustic levitator, and proves to be successful in predicting resonant modes, Hm ( m =1, 2, 3, 4), and in explaining the axially symmetric deviation of the levitated samples near the reflector and emitter.

该模型揭示了声悬浮性能和以声波长为参考的悬浮器几何参数之间的本征关系，成功地预测声场的谐振模式 Hm ( m =1， 2， 3， 4为模式数， Hm 为反射端-发射端谐振间距)，并解释了反射端和发射端附近的悬浮样品偏离对称轴的实验现象。

It is difficult to be simulated and analyzed due to the excessive surfaces, complex structure and locomotory parts in zoom lens. All the transmission planes taken as the partial reflection and partial transmission planes were simulated with ASAP（advanced system analysis program）and the stray rays on "dangerous surfaces" which easily generate the ghost images in zoom lens were analyzed. Based on it, the zoom lens was optimized and the quality of image was improved by changing the curvature and refractive index of the second reflection planes.

利用ASAP软件模拟每个透射面作为部分透射、部分反射的表面，对变焦光学系统非轴上光进行分析，模拟出变焦系统的光学元件表面和光机内壁，实行实际光线追迹，然后以像面为研究对象，进一步实施实际光线追迹，模拟出全部散射光在像面上的能量分布，找出鬼像形成的原因，并在此基础上通过改变二次反射所在面的曲率或改变所在面的折射率两种方法对变焦光学系统进行优化，减小鬼点数目，以提高系统的成像质量。

First, based on the analogy of the mathematical expressionbetween the propa gation of EM wave and that of seismic wavein a horizontal stratified earth, the re flectivity and transmissionformulation for EM plane wave propagating incident nor malto the layers are derived, the formulation with relation to pseudo-impulse is discussed and pseudo-impulse response is compared with impulse response of re flection seismology.

作者首先基于电磁波与地震波在水平层状介质中传播特征在数学形式上的相似性，推导了垂直入射平面电磁波在层间反射与透射传播函数，并讨论了它们与伪脉冲的关系，与反射地震学中脉冲响应作了对比。

We measured the light transmittance, reflectance and photosynthetic capacity of leaves of Mikania micrantha and 19 other species of plants (herbal and woody sp.) in the same community. M. micrantha and other plants were similar in transmittance and reflectance spectra and showed no apparent differences in the relation between leaf-optical and photosynthetic-related in the same community.

该文对薇甘菊及其所在群落内19种植物的叶片透射率、反射率和光合特征指标进行了测定，结果表明：薇甘菊与其它植物透射和反射图谱的变化趋势都比较相近，在各个光学特征指标与光合相关指标的相互关系中，薇甘菊并没有表现出区别于同一群落内其它植物的特征。

1On the basis of pattern recognition analysis and in the light of the spectrum oflight source and the spectral response of CCD sensor as well as the spectral reflectance ofkernels,it is found that for the monochromic image recognition system and under the con-dition of reducing the probability error of classification to minimum,the optimum lightsource is a monochromatic light,the wave length of which is that rendering the series re-sponse of the difference between the spectral reflectances of two classes of kernels and theCCD sensor spetral response maximum.

在模式识别理论分析基础上，依据光源光谱、CCD摄像元件光谱响应以及作物籽粒表面反射率光谱特性，在使分类错误概率最小的目标下，得出籽粒黑白图象识别系统最佳光源为单色光，其波长为使两类待识别籽粒反射率光谱差值与CCD光谱响应二者的串联响应最大的波长。

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％。