可反射的

In the analysis of the frequent spectrum and the reflection coefficients, based on Godas two-points method which fit to the normal incident wave, a modified two-points method is derived that can be used to calculate the frequent spectrum and reflection coefficient of the oblique waves from which the frequent spectra of incident waves and reflected waves incoming in arbitrary angular, the bulk reflection coefficient and the frequent spectrum of reflection coefficient could be computed, also from which in theory the waves could be measured in two wave gauges which is disposed at any direction.

为了分析单向不规则波入射波的频率谱和反射系数，本文在Goda用于分析正向不规则波的两点法的基础上，提出了可用于斜向不规则波频谱分离及其反射系数计算的改进两点法，该方法可用于计算任意波浪入射角的入、反射波谱、总体反射系数和反射系数的频率谱，并且测量波浪过程的两浪高仪可在较广的方向范围内布置。

In the analysis of the frequent spectrum and the reflection coefficients, based on Goda's two-points method which fit to the normal incident wave, a modified two-points method is derived that can be used to calculate the frequent spectrum and reflection coefficient of the oblique waves from which the frequent spectra of incident waves and reflected waves incoming in arbitrary angular, the bulk reflection coefficient and the frequent spectrum of reflection coefficient could be computed, also from which in theory the waves could be measured in two wave gauges which is disposed at any direction.

为了分析单向不规则波入射波的频率谱和反射系数，本文在Goda用于分析正向不规则波的两点法的基础上，提出了可用于斜向不规则波频谱分离及其反射系数计算的改进两点法，该方法可用于计算任意波浪入射角的入、反射波谱、总体反射系数和反射系数的频率谱，并且测量波浪过程的两浪高仪可在较广的方向范围内布置。

Novel ZnSe nanosheets with tunable size and phase have been facilely synthesized via hydrothermal routes in the presence of neutral butylamine as structure-directing agent and ethylene diamine tetraacetic acid as stabilizer.

以乙二胺四乙酸为稳定剂、丁胺为结构导向模板，采用水热合成方法制备了尺寸和晶型可控的ZnSe纳米片晶；利用XRD，TEM，SEM以及紫外-可见漫反射等手段对所得的产物进了表征，结果表明，通过改变水热温度和BA用量，可以实现ZnSe纳米片晶的大小和物相的调控，并初步分析了其形成过程

When end surface is neglected, the reflective energy will return to the filament efficiently if the filament is at the centre axis of the columniform lamp shell. 3 Compared with the straight tungsten filament that has a smooth surface, the helical one obtains higher absorbance which can achieve 0.6~0.7 under the actual screw pitch measurement.

当灯的管径为10 mm，而灯丝外径为1.5 mm时，节能可达12%到13%。2）对圆柱形灯外壳，在不考虑端面影响时，光源的灯丝若处于外壳的中心轴上，则反射的能量会有效地返回灯丝。3）螺旋结构的灯丝比表面光滑的直钨丝有更高的吸收率，灯丝绕成螺旋后在现行的螺距尺寸下吸收率能达到

At the entrance of cooking chamber, one can rotate around the mixer, because the metal mixer is wind fanlike spin, after each direction of microwave is reflected, so can the microwave energy evenly distributed in cooking chamber.

在烹调腔的进口处附近，有一个可旋转的搅拌器，因为搅拌器是风扇状的金属，旋转起来以后对微波具有各个方向的反射，所以能够把微波能量均匀地分布在烹调腔内。

In order to overcome the defect of traditional methods and to find a new simply and effective time-domain method to eliminate the influence of boundary reflection. The main contents of studies and achievements are as follows: The liquefiable saturated sand dynamic character researches are conducted by means of the resonant column test and the dynamic tri-axial test; The undrain dynamic relationship between stress and strain, the damping ratio, saturated sand liquefaction mechanism, laboratory liquefaction standard, the effective factors of liquefaction are considered in laboratory. Liquefaction strength parameters used in element numerical simulation are obtained.

为克服传统方法存在的问题，寻求一种简单有效、能消除截断边界反射影响的时域有限元方法，本文主要开展了如下研究工作：对工程场地土体进行了标准贯入、静力触探、剪切波速等现场原位试验、室内动三轴试验以及共振柱试验，针对研究区域内可液化的饱和土进行了动力特性试验研究，分析了饱和土体的不排水动应力～应变关系和阻尼特性；对研究区域内的饱和砂土的液化机理，室内试验液化判别标准及影响饱和砂土液化的诸多因素进行了研究，得出了工程场地土体的抗液化强度指标等有限元模拟所需参数。

We establish measurement twice on micro shift for testing superprism effect. And the "thin film gratings" measurement, which we adopt finally, has critically tunable monochroic system, collimated system and exact system for spot detection, realizing detect the micrometer-level shift of reflective and transmissive spots with high sensitivity and precision, and is useful for studies on dispersive device with high resolution.

为了更好地对超棱镜效应进行测试，本文先后两次搭建了微位移测试平台，尤其是最后采用的&光学薄膜光栅&超色散测试系统，采用精密可调的单色系统、小光束准直系统以及精密光斑位置检测系统，实现高灵敏度、高精度的反射光斑及透射光斑的位置检测，为超分辨色散器件的研究奠定了基础。

The function of 3dB fiber loop mirror in fine wavelength partition is studied. With this theory, a novel narrow linear band, dual-wavelength switchable Er-doped fiber laser is realized.2. An unpumped Er-doped fiber and broadband fiber Bragg grating with high reflectivity is served as an auto-tracking filter, where the space hole-burning effect appears when the laser signal travels and forms standing wave, thus the generation of multi-longitudinal-mode is suppressed. Then the high birefringence fiber loop mirror is introduced to act as comb-liked wavelength filter.

主要包括：1、发现3dB光纤环镜的精细波长分割作用，并利用这种分割机制，研制成功一种窄线宽、双波长可转换的掺铒光纤激光器。2、利用未受泵浦的掺铒光纤以及宽带高反射率的光纤布喇格光栅做自动跟踪滤波器，当穿行其中的激光信号构成驻波时，出现了空间烧孔效应，从而抑制了多纵模的产生，引入高双折射光纤环镜做梳状波长滤波器。

The direction that the echoes come from shows the compass bearing of the target.

由目标所反射的无线电波回迹的方向能确认其方位角，电波发射和折返的时间可以确认其距离，每英里需时1.24*10-6 S，目标的仰角可被用以确认其高度。

To further study this problem, the optical axis is rotated by an arbitrary angle. A striking phenomenon is discovered that the Brewster angle is always equal to the rotation angle. This is because the waves in the direction perpendicular to the optical axis become evanescent since the permittivity is positive while the permeability is negative in this direction.

然后进一步的研究了主轴不垂直于界面的情况，发现主轴转动的角度恰好等于此时的Brewster角，这是因为此时垂直于主轴的方向上介电常数为正磁导率为负，只有倏逝波而没有可传播的波存在，因此反射系数为0。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。