入射

By analyzing the behavior of metallic surface plasmon wave, the resonance condition and origin of frustrated total reflection are got.

分析了金属表面等离激元波的行为，得到了等离激元波与入射电磁波的共振条件及受抑全反射的产生原因。

The ROLF is divided into slow and rapid ROLF in terms of the FORR time parameters, the round-trip time and response time equal to the reciprocal of the effective bandwidth.

在上述的理论和实验研究中，本文取得以下主要进展 1首次证明了环形腔的有效带宽总是大于入射光的频宽，这一结果确定了环形腔的最大分辨本领。

Simulation result of the experiment shows that unloading and recovery process of PTCS is not consistent with the local stress redistribution and concentration.It can be divided into four phases:1.local stress unloads first in the middle of PTCS;2. stress continues to unload near the incident bar.3.Stress continues to unload near the transmission bar,the first and second layer PT buckling rumple disappear;4.the whole PTCS vibrates elastically.

对具体冲击实验的数值模拟结果表明：相变柱壳的卸载恢复过程在柱壳结构中是不均匀的，伴随着壳体局部应力释放和局部应力集中，可以分为以下四个阶段：1、柱壳中部发生弯曲变形的壳体应力首先释放，2、靠近入射杆端的壳体应力继续释放，3、靠近透射杆端的壳体应力释放，第一层与第二层相变屈曲皱褶消失，4、柱壳整体弹性振动。

This work discusses and compares the methods of deriving the Rutherford scattering formula,and analyses the Rutherford scattering in the low energy(e,2e) reactions through the study on electron impact ionization of helium.

讨论和比较了用不同理论方法导出卢瑟福散射公式；分析了低能电子入射单电离氦原子(e，2e)反应中的卢瑟福散射；尤其是通过卢瑟福公式给出了有效核电荷的表达式。

So, researching the influence to reflection wave features made by the factors, such as sand and mud thin-bedding seismic reflection feature, the thickness of single layer in the thin-bedding group, the thickness of subroutine structure, the number of layers in the thin-bedding group, type of incident wavelet, main frequency, sampling rated has the moment current significance and theoretical significance in the qualitative or quantitative seeking of single layer's thickness or thin layer group's thickness in the thin-bedding and forecast of the space distribution laws of thin reservoirs.

目前我国东部的石油勘探工作已进入精细勘探阶段，如何确定陆相地层中薄储层的空间展布规律及其性质已成为一个亟待解决的问题，由于我国东部的绝大多数中、新生代陆相含油盆地大都以薄层砂、泥岩沉积为主，夹有少量薄层碳酸盐岩、页岩及膏盐层，地层岩性和厚度横向变化均较大，而且这些地层的厚度远远低于常规地震勘探的垂向分辨率，因此，从理论上研究沙泥岩薄互层地震反射特征、薄互层组内的单层厚度、子结构厚度、互层组内层数、入射子波类型、主频、采样率等各种因素对反射波特征的影响，将对我们定性或定量求取薄互层组中各单层厚度或薄层组的厚度、预测薄储层的空间展布规律有一定的理论和现实意义。

The results of 3-D nonlinear seismic analysis show that, to arbitrary velocity and input direction of the design travelling wave, the aseismic safety of the joint structure in the top of diaphragm walls is reliable; all of the core and the diaphragm walls wouldn't occur tension rupture or crack; the sand lens in the overburden wouldn't occur liquefaction; the dam wouldn't occur sliding.

三维非线性动力分析表明，在设计地震作用下，无论各种波速及各种入射方向，防渗墙顶连接部位的抗震安全性较高；坝体心墙及防渗墙不会产生拉伸破坏或裂缝；覆盖层砂层透镜体不会液化；坝体不会出现滑移破坏。

The currents on the scatterer consist of three components, one is associated with the current induced by the incident field, the other two describe the reflected from the cylinder terminations.

圆柱上的电流由三部分构成，其中之一是入射波的感应电流，另外两部分是圆柱末端的反射电流。

Scattering angle is the angle between the scattered and incident directions.

散射角是散射方向与入射方向之间的夹角。

The compensation board by board and not strictly parallel, the two mirror each other not vertical, the incident light and not vertical mirror, screw-top block and mobile positioning block contact between the loosening or wear problems, a simple analysis and Processing.

对分光板和补偿板不严格平行、两反射镜相互不垂直、入射光与反射镜不垂直、螺杆顶块与移动镜接触定位块之间的松动或磨损等问题，进行了简单的分析和处理。

Secondly, we provide a two-level model to depict the one-, two-and three-photon fluorescent process and with it to calculate the one-, two-and three-photon fluorescence intensity dependence of the incident excitation intensity and time. We study the fluorescence intensity when excitation light's time distribution are square pulse、Gaussian pulse and sech pulse. We find that the influence of excitation light's time distribution on the two- and three- photon fluorescence peak intensity is larger than the one-photon fluorescence peak intensity. Two-level model can account for the behavior of saturation fluorescence.

然后用二能级模型解释了单、双、三光子激发原理，在理论上推导出了单、双、三光子吸收诱导荧光强度与脉冲强度以及脉冲作用时间的关系，并进一步研究了入射光时间分布分别为矩形、高斯型、双曲正割型时激发溶解在氯仿溶液中的C22H22N4O样品所产生的荧光峰值光强，结果表明激发光的时间分布对双、三光子荧光峰值强度的影响比对单光子的影响要大。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。