地震

It is needed to study the influence on the detection effects, which is aroused by such as the level of integrity of the seismic prospecting event、the variety of the apparent dominant frequency of the Ricker wavelet.

为完善该方法，需要研究诸如地震勘探同相轴完整程度、组成同相轴的地震子波变化等对系统检测效果的影响。

It can compute the seismic resolution limit in time and space (1/4 wavelength) according to seismic apparent dominant frequency and the velocity of targets.

根据地震视主频和目的层的速度可以计算出空间和时间地震分辨率(1/4波长)极限。

Furthermore, the earthquake auspice data processing method and a series of parallel implement algorithms are proposed based on the technique of time series analysis.

本文把地震地区相关性问题转化为时间序列的关联规则挖掘问题，通过相关的实验和结果分析，挖掘出许多有价值的地震区域相关性知识。

In the observation of earthquake auspice,the data often change suddenly,in this situation,we must analyse the data immediately,so that we can know whether the change is exceptional or not,then we can provide some reference for disaster prevention.

地震前兆数据观测中，经常会遇到数据突然发生变化，遇到这种情况，就要及时进行分析，研究其是否与地震孕育有关，为防震减灾工作提供依据。

The statistical average values of maximum acceleration responses of SDOF systems subjected to earthquake ground motions are investigated.

以地震地面运动数字记录为输入，计算单自由度体系最大地震加速度的统计平均值。

Aimed at solving this problem, this paper has analyzed the requirements of AVO for the designing of the 3D observational system and ...

笔者针对这些问题，分析了AVO对三维地震观测系统设计的要求，提出了一种AVO观测系统，既适合常规三维地震勘探，又能满足AVO技术的特殊需要。

A strong earthquake shook Portugal's mid-Atlantic Azores archipelago early Thursday, according to the US Geological Survey's Earthquake Information Center.

强烈地震震撼了葡萄牙大西洋中亚速尔群岛早期周四、根据美国地质调查局地震信息中心。

The research purpose, significance and current states of base isolation are introduced in this thesis.

本文在论述了建筑结构隔震研究的目的和意义以及国内外的研究现状之后，针对在多遇水平地震作用下的隔震效果与罕遇水平地震作用下最大。。。

In order to understand the seismic performance of the large complex structure with basement, the structure-pile-soil finite element model of two typical cross sections of the Tianjin Transportation Junction were established by using the ANSYS software. The elasto-plastic time history analysis was made, and the seismic responses of the whole system under the horizontal seismic load were got. Comparing the results of the seismic response with the rigid foundation model, some reasonable conclusions are drawn.

为弄清楚带有地下室大型复杂结构的抗震性能，本文针对天津站交通枢纽工程，分别取结构典型的横向及纵向剖面，应用大型通用有限元分析软件ANSYS，建立了结构－桩－土体系相互作用的有限元模型，采用动力时程分析方法，研究体系在水平地震作用下的弹塑性动力反应规律，分析结构在地震动作用下的位移和内力的分布；并与假定刚性基础周边土简化为弹簧的结构模型的计算结果进行比较，通过两种模型的地震反应的对比分析，得到了一些有益的结论。

The results indicated that the formation of fault basin constrained by magnetic crystalline basement. The more complex of the crustal tectonic, the greater the difference mechanical strength between crust media, the smaller thermal water release less, the easier bred major earthquake.6. Mapped the new quaternary tectonic map of four fault basin based on the data of shallow seismic profiles, drilling, and the redrawn fault system divided by the potential data processing, etc.

研究结果表明断陷盆地的形成受磁性结晶基底的制约；地壳结构越复杂，地壳介质之间的力学强度差异越大，热水点年释放量越小，就越容易孕育和发生大的地震。6、利用浅层地震剖面、钻井等资料，并参考重磁划分的断裂系，新编制了山西四个断陷盆地的第四系构造图。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。