叠

Therefore, based on the seismic data of Inline 146 and Inline 166 in Jianghan Oilfield, conventional analysis is made with GeoDepth software. The result shows that compared with post-stack rime migration, pre-stack depth migration profile has many advantages, including better fault imaging, accurate migration horning and better effect of complex structural imaging.

因此，针对江汉油田的Inlind146、Inline166的地震资料，经GeoDepth软件的常规分析处理，其结果表明，叠前深度偏移剖面较叠后时间偏移有许多优点：断层成像效果好、偏移归位准确、复杂构造成像效果好等。

How to calculate the synthesis operator is the key problem of controlled illumination prestack depth migration. In this paper the inverse time focusing operator is synthesized based on the traveltime calculation method of finite difference approach, and with this synthesis operator the authors calculate the focusing point controlled illumination prestack depth migration using Fourier finite difference. The test results of Marmousi model show its effectiveness and the great advantage of improving computational efficiency.

进行控制照明叠前深度偏移的关键是合成算子的选择，笔者基于有限差分的走时计算方法合成了逆时聚焦算子，基于该合成算子利用傅里叶有限差分法进行了聚焦点控制照明叠前深度偏移，针对Marmousi模型的试算结果表明了该方法的有效性及其在提高计算效率方面的巨大优势。

The basic principle of simultaneous inversion is introduced firstly and then the application of prestack simultaneous AVA inversion in exploration of middle-depth gas reservoir at Shengli oil field is discussed in some aspects, such as seismic data and well logs processing, angle wavelet extracting and calibrating, and inversion.

首先介绍了叠前AVA同步反演的基本原理，继而从地震和测井资料处理、角度子波提取和标定以及最终反演等方面，讨论了叠前AVA同步反演技术在胜利油田中层气藏勘探中的应用。

The process can convert over 95% isobutylene in C 4 olefin into diisobutylene or isooctene in the present of acid cation exchange resin catalyst,and partial 1-butylene also take part in the reaction.

介绍了一种混合碳四烯烃叠合利用的预反和催化蒸馏组合技术，该技术以酸性阳离子交换树脂为催化剂，可以将混合碳四烯烃中的95%以上的异丁烯叠合反应生成二异丁烯和异辛烯，且部分正丁烯也参与二聚或共聚。

Tetrazole derivatives are one of the important energetic materials. Their metal salts are potential detonators to replace lead azide. In fact they are the primers studied most systematically besides azides.

四唑衍生物是一类重要的高能材料，其金属配合物可能作为高能钝感起爆药替代叠氮化铅、它们是除叠氮化物以外研究得最为系统的起爆药剂。

Historical development. This part investigates the developing process of the verb reiterative- locution and points out that it precedes the corresponding double- phonetic- form verb and the typical verb reduplication.

七、历史演变这一部分粗略考察了动词复叠式的演变过程，指出动词复叠式先于相应的双音动词、典型重叠式产生。

The reterative locution,a common and typical artistic language,frequently shows the writer's personality and is full of rich value of the aesthetic judgment together with the aesthetics character.

叠字往往集中体现作者的个性，具有鲜明的美学特征和丰富的审美价格。敦煌词的叠字具有清旷的审美特点。这具体表现为：词汇清丽、技巧清通、形式清雅、音韵清越、情感清凄等。

The random cascade model with a lognormal distribution is used to simulate the infiltration process in soils, and the different methods are applied to estimate the model parameters.

随机层叠模型中具有对数正态分布性质的随机层叠发生器被用来描述水流入渗过程，不同的方法被用于模型参数求解。

He found old meerschaum pipes, and soiled, crumpled gloves that had once been fresh from the Parisian maker; old play bills, whose biggest letters spelled the names of actors who were dead and gone; old perfume bottles, fragrant with essences, whose fashion had passed away; neat little parcels of letters, each carefully labeled with the name of the writer; fragments of old newspapers; and a little heap of shabby, dilapidated books, each of which tumbled into as many pieces as a pack of cards in Robert's incautious hand.

他发现了陈旧的海泡石烟斗，一度是从巴黎制造商手里买来的崭新时髦的、而今弄脏弄皱了的手套；陈旧的节目单，单子上用最大的字体排印姓名的演员，都已经死了走了；尚有余香的香水瓶，这种香水现在已经不时髦了；一小包一小包整整齐齐的信件，每一包上都仔细地贴上了标明来信者姓名的标签；残缺不齐的旧报纸；一小堆破旧损坏的书籍，每本书都在罗伯特不小心的手里折腾成了许多帖，仿佛一叠叠扑克牌似的。

The design method aims at minimizing aliasing in the subband signals as well as minimizing resisual aliasing, system distortions in the reconstructed output signal.

讨论过采样系统的子带混叠、系统输出中的混叠和系统失真，推导并给出了一个相对简单的非线性优化算法。

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％。