反射

Frequency downshift and upshift of microwaves reflected by laser-induced plasma were detected in the experiments.

研究了微波被激光等离子体反射时反射波的频率变化。

The results show that the C/W multilayers have smooth surface and well-defined sharp interfaces.No crystallization was found to exist in all constituent amorphous C and W layers.The reflectivity of the multilayer is about 6% at an incident angle of 44.2° and a wavelength of 5.9 nm.

而更短波长的正入射多层膜制作技术尤为困难，反射率很低，例如，在5 nm~10 nm范围内，所获得的多层膜的最高反射率为40%(λ=9·4 nm，θ=13·6°)[3]，在水窗波段2·3 nm~4·4 nm，可做到29%(λ=4·4 nm，θ=26°)，更短的波段1·4 nm~2·4 nm，可以做到0·1%λ=1·4

The high resolution multiazimuthal walkaway VSP method was applied to the accurate prediction of reservoirs in Tahe oil field.

将高分辨率多方位VSP地震方法应用于塔河油田储层描述，实现了上行反射P波和S波精确成像，提高了地震资料及储层预测的分辨率；并建立了含缝洞碳酸盐岩储层的地震反射特征和裂缝发育储层的地震识别方

On the first pass, the environment is geometrically reflected around the water plane by the use of a special reflection matrix.

在第一遍，通过使用一个特殊的反射矩阵，环境绕水平面几何反射。

The so-called transmission-means-tested objects on the road, a constant source of light energy through the measured object, most of the absorption, optical transmission project to optoelectronic components; The so-called diffuse reflection is a constant source of light projected on the measured object, from the detected objects to the surface after projecting optoelectronic components; Shade refers to the so-called when-issued light of the flux measured by the light of a cover part of the projected cut optoelectronic components of flux change, and the degree of change in the optical path detected objects on location

所谓透射式是指被测物体放在光路中，恒光源发出的光能量穿过被测物，部份被吸收后，透射光投射到光电元件上；所谓漫反射式是指恒光源发出的光投射到被测物上，再从被测物体表面反射后投射到光电元件上；所谓遮光式是指当光源发出的光通量经被测物光遮其中一部份，使投射刭光电元件上的光通量改变，改变的程度与被测物体在光路位置有关。

The so-called transmission-means-tested objects on the road, a constant source of light energy through the measured object, most of the absorption, optical transmission project to optoelectronic components; The so-called diffuse reflection is a constant source of light projected on the measured object, from the detected objects to the surface after projecting optoelectronic components; Shade refers to the so-called when-issued light of the flux measured by the light of a cover part of the projected cut optoelectronic components of flux change, and the degree of change in the optical path detected objects position.

所谓透射式是指被测物体放在光路中，恒光源发出的光能量穿过被测物，部份被吸收后，透射光投射到光电元件上；所谓漫反射式是指恒光源发出的光投射到被测物上，再从被测物体表面反射后投射到光电元件上；所谓遮光式是指当光源发出的光通量经被测物光遮其中一部份，使投射刭光电元件上的光通量改变，改变的程度与被测物体在光路位置有关。

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。

PubMed abstract: The defensive siphon and gill withdrawal reflex of Aplysia is a simple reflex mediated by a well-defined neural circuit.

PubMed摘要：海兔的呼吸管和鳃的防卫性撤回反射是一个由明确定义的神经回路介导的简单的反射。

The following results are made from this research: Assessing data quality and band combination of different bands in line with geo-target features in desertification areas, and determining basic bands for desertification monitoring. And understanding and studying the spectral features and variation rules of geo-targets in the experimental area, raising that it is the basis of geo-targets information collection with imaging spectrometer data to understand spectral features and variation rules of geo-targets, realizing that in a great extent spectral-integrated-form-based classification method can remove the phenomenon of "different spectrum with same objects" resulted from reflection ratio curve translation because of the angle change among sensor, targets and observation direction, and the average and variance images can be introduced to solve the problem of two kinds of geo-target with similar spectral forms and much different values of whole reflectionratio. It is suggested that "red edge" range bands of vegetation, which has close relationship with vegetation cover and biomass, is the main characteristic bands and important basis for careful vegetation classification and quantitative retrieval, and pixel-based derivative spectral analysis is very useful for removing the effects of soil background values and quantitatively retrieving vegetation biomass and cover. The remote sense quantitative retrieval model is developed for main appraisable factors of desertification monitoring assessment with imaging spectrometer data and then the applicability of model is analyzed.

研究结果如下：首先针对荒漠化地区的地物特征，对高光谱数据不同波段的数据质量、波段组合进行了评价，提出了适用于荒漠化监测的基本波段选择集；初步了解和掌握了研究地区的地物光谱特性及变异规律，进一步明确了掌握地物光谱特征和变异规律是用成像光谱仪数据提取地物信息的基础；发现了基于光谱整体形状的分类方法在很大程度上能够消除由于传感器、地物目标观测方向之间的角度变化引起的反射率曲线整体平移的&同物异谱&现象，对于谱形相似而整体反射率的值相差较大的两类地物，通过引入均值和方差图像参与分类得到解决；研究还表明在植被&红边&范围内的波段是进行荒漠化监测的主要特征波段，这些波段与植被生物量和盖度都有密切的关系，是开展精细植被分类研究和植被定量反演的重要基础；像元的导数光谱分析可以消除土壤背景的影响，是进行植被生物量和盖度定量反演的有力工具；建立了荒漠化监测主要评价因子的定量反演模型，并分析了模型的适用性。

the acoustic reflex has advantages such as sensitive, convenient and so on, and is an objective, reliable and atraumatic examination in diagnosis and surveillance of myasthenia gravis.

声反射检测具有敏感、使用方便等优点，是一种客观、可靠、无创伤的检查方法，在重症肌无力的诊断及病情监测方面有一定的应用价值。重症肌无力；声反射；新斯的明

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％。