次波

Peaking in the frequency spectrum due to repetition of signals by multiple reflection is not confined to water layers.

多次反射波引起的信号重复在频谱中造成的峰值增多，并不仅仅局限于水层。

In order to increase the reliability of results,the rectilinearity polarization filter analysis and modified N th root slant stack methods were used to pick out P SV converted phases.

为了提高所得结果的可靠性，采用了线性-偏振滤波方法和修正的N次根倾斜叠加方法来提取P SV转换波。

A differential iteration solution is presented by combining the features of bidirectional iteration method, Newton′s interpolation formula and direct differential method.

将"双向迭代"、牛顿二次差商以及直接微分等分析手段有效地结合起来，形成一种被称为"微分迭代"的波导方程解析方法。

The main results can beexpressed as follows:(1)Based on πtheory, some affected factors about wave forces are given, and therelation between affected factors and wave forces is analysised by experimentalresults.(2) The distribution of wave press at representative time and reflection nature aregiven and their variety charactes are discussed by experimental results.(3)By comparing the wave forces of quarter-circular breakwater and semi-circularbreakwater under the same wave conditions,some approximately wave forcesexpressions of quarter-circular breakwater are given.(4)Based on VOF method to trace water free surface,solve numerical value ofRANS equation,and get the distributions of flow field and wave press ofquarter-circular breakwater at the same time during one period,the mechanism ofwave force is also discussed elementarily.(5) Based on the result that RANS equation of numerical simulation agree wellwith experimental results,a new approach to study hydraulic natures of quarter-circular breakwater is provided.

其主要结论如下：一、通过π定理，确定影响波浪力的无因次参变量，根据试验结果对其影响因素进行分析；二、基于模型试验，给出典型时刻圆弧面防波堤的同步波压分布和反射特性，讨论它们的变化特点；三、通过相同条件下圆弧面防波堤与半圆型防波堤两种堤型试验波浪力的比较，给出了圆弧面防波堤波浪力的近似方法；四、利用VOF法追踪自由水面，数值求解RANS方程，得到圆弧堤堤体周围的流场和压力场，初步分析了速度涡流与压力场的相互影响；五、对比数值分析与试验结果，探讨数值方法研究圆弧面防波堤水力特性的可行性，提供新的研究途径

However, Li Yu and Liu Bo are much more than an onlooker or recorder of a past event.

而在他们的作品中，李郁和刘波却远远不仅仅是一次过往事件的旁观者或者记录者。

The Sea Rat, as soon as his hunger was somewhat assuaged, continued the history of his latest voyage, conducting his simple hearer from port to port of Spain, landing him at Lisbon, Oporto, and Bordeaux, introducing him to the pleasant harbours of Cornwall and Devon, and so up the Channel to that final quayside, where, landing after winds long contrary, storm-driven and weather-beaten, he had caught the first magical hints and heraldings of another Spring, and, fired by these, had sped on a long tramp inland, hungry for the experiment of life on some quiet farmstead, very far from the weary beating of any sea.

航海鼠稍稍填饱了肚子，就接着讲他最近一次航海的经历。带领着这位单纯的听者遍游西班牙所有的港口，登陆里斯本、波尔图和波尔多，来到英国的康威尔郡和德文郡那些可爱的港口，然后溯海峡上行，到达最后的港湾地带。他顶着暴风雨和恶劣的天气，逆风航行了很长时间，终于登上了陆地，迎来了又一个春天的迷人气息。这一切激励着他匆匆奔向内陆腹地，一心想体验某种宁静的农庄生活，远远避开海上的颠簸劳顿。

The failure of the fire at Fanjeaux to consume the dissertation he had employed against the heretics, and which was thrice thrown into the flames; the raising to life of Napoleone Orsini; the appearance of the annals in the refectory of Saint Sixtus in response to his prayers, are but a few of the supernatural happenings by which God was pleased to attest the eminent holiness of His servant.

失败的大火方若食用了论文，他曾聘请反对异端，并先后三次被扔进火焰；提高生命的拿波洛恩奥西尼；外表而载入史册，在refectory圣Sixtus的回应他祈祷，但也有少数的超自然现象，其中神高兴地证明了著名的成圣他的仆人。

SCE on second order differential oscillogram, and the height of this pair peak of β-CD on the oscillogram decreased with the increase of Cu(superscript 2+) or rutin, phenobarbital, L-plenylalanine and amantadine hydrochloride concentration.

SCE处产生一对可逆、灵敏的峰，当加入Cu(上标 2+)、芦丁、苯巴比妥、L-苯丙氨酸、盐酸金刚烷胺等金属离子或有机物时，β-CD的二次微分示波图上的峰高降低。

The OWT of an input image with multi-scale and multi-orientation can be obtained in one operation with this element.

利用这种被称作"光学视网膜"的器件将能够一次获得多种尺度、多种取向的子波变换结果。

An accelerated acoustic echo cancellation algorithm is proposed in this paper based on Parallel Subgradient Projection technique.

摘要该文在并行次梯度投影技术(Parallel Subgradient Projection，PSP)的基础上，提出一种加速回波抵消算法。

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。