出射的

An experiment on near threshold double ionization of helium impacted with 106 eV electron has been performed by using the newest developed reaction microscope. In this experiment the momenta of all products after double ionization of helium were measured and the five fold differential cross section was obtained for emitted electrons.

利用最新发展起来的适用于低能电子入射的反应显微成像谱仪，对电子轰击He原子近阈值的双电离过程进行了研究，实验测量了反应后4个粒子的全部动量，获得了五重微分截面及出射粒子间的关联信息。

Utilizing the symmetry of the output of the light produced from the slab target, this method is concise and can simply give the result by comparing the intensity of the beams received by flat-field grating spectrometer.

这种方法避免了测量入射光以及出射光的绝对强度，减少了测量过程中的被测量，因而测量的误差也随之降低。

An optical element such as a rear projection screen for an image display device comprises at least two substantially rigid sheet members each having a first major surface and a second major surface providing a plane of incidence and a plane of emergence, respectively, through which light is transmitted sequentially. A first sheet member comprises a Fresnel lens, and a second sheet member comprises a lenticular lens array on each of the major surfaces thereof.

一种光学元件，例如用于图象显示装置的背投式屏幕（1），包括至少两个基本为刚性各具第一主表面（21；31）和第二主表面（22，32）的板部件（2；3），分别提供顺序穿过光线（10）的入射面和出射面，第一板部件（2）和第二板部件（3）在其各个主表面（31，32）上分别包含一个菲涅耳透镜（24）和一个双凸透镜阵列33，35。

The paper analyzes the change of the exit light from a circular polarizing filter used inversely according to the interference theory of polarized light, measures the spectral transmittance curves with the combining of circular polarizing filter and linar polarizing filter, and summarizes the photographic performance of the circular polarizing filter used inversely.

将圆偏振镜与线偏振镜组合，并使 1 4波片位于线偏振镜之间，测定出线偏振镜和圆偏振镜相对旋转至不同方位时的分光透过率曲线，探讨了入射光为线偏振光时出射光因偏振光的干涉而相应出现的强度和色度变化，并以此为模型，对圆偏振镜反向使用时的摄影性能进行研究和总结。

The experiments and simulations are performed by using a conical lens whose radius is 15 mm and basic angle is 1°. The experimental results are compared with the theoretical analysis and computer simulation results. The comparison indicates that the influence of eccentricity on the diffraction mode decreases as the radius of curvature of incidental spherical wave and the propagation distance decrease.

使用半径为15mm，底角为1°的圆锥透镜进行计算机仿真和实验，最后将实验结果与理论分析和仿真结果相比较，证明球面波的曲率半径和出射光束的传输距离越小，偏轴对衍射模式的影响越小。

Through the analysis, to make use of the trapezoid method and Simpson's method to obtain the radiant emittance value of blackbody within a limited region conveniently.

通过分析可知，利用梯形法和辛普森法能够方便地求出黑体在有界域内的辐射出射度值。

It is found that very high spin polarization could be obtained under the appropriate structure when the injection is unpolarized.

发现通过适当的设计结构，当电子自旋非极化入射时，在出射端可以得到非常高的自旋极化率。

The XRD studies show obvious diffraction peaks associated with graphitic carbon and Co metal. Co particles in the composite are stable even at 2500℃ in inert atmosphere .

复合微球的 X 衍射图显示出明显的石墨碳和金属钴的衍射峰，2500℃石墨化后，复合微球中的钴仍能稳定存在。

The results show that when the cone angles are equal to a series of special values incident beams normal to the bottom surface of a cone passing through this cone will exit along its generatrices,and form a circle-type spot on the plane perpendicular to the axis of cone,all its energies is concentrated in the circle.

结果显示圆锥体的顶角等于一系列特定值时，垂直圆锥体底面入射的光束经过该圆锥体后光束沿着其母线方向出射，在垂直于圆锥体轴线的平面上形成一圆周型光斑，其光能量全部集中在圆周上。

In order to obtain a correct height distribution of a measured object using the conventional Fourier transform profilometry, the connecting line between the exit pupil of the projecting system and entrance pupil of the imaging device must parallel to the reference plane and in the same horizontal.

在传统傅里叶变换轮廓术三维面型测量中，为了准确得到被测物体的高度分布，必需保证投影仪出射光瞳和摄像机入射光瞳的连线与参考面平行并且在同一水平面，否则存在较大的误差。

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。