seis

Apparent velocity and polarization are important characters of seis - mic wave .

视速度和偏振是地震波的两个重要特性。

There were also some seis - mic activities on the eastern part of the Eurasian belt and strong earthquakes also occurred in the east of Baikal Lake region .

亚欧带东段继续有地震活动，贝加尔湖以东地区发生强震。

Qualitative Analysis of a Dynamic SEIS Epidemic Model with Quarantine Items

一类具隔离项的动态SEIS模型的定性分析

Dynamic Behavior of the SEIS Model with the Saturating Contact Rate

具有饱和接触率的SEIS模型的动力学性质

Global asymptotic stability of an SEIS epidemic model with constant input

具有常数输入的SEIS模型的全局渐近稳定性

SEIS + + : A Pattern Language for Seismic Tools Construction and Integration

SEIS++：一个油气勘探领域软件建造和集成的模式语言

Qualitative analysis of a kind of SEIS model with general saturating contact rate

一类具一般形式饱和接触率的SEIS模型的定性分析

Analysis of Global Dynamic in an Epidemical SEIS Model

一类SEIS流行病模型的全局动力学分析

The Dynamics of SEIS Epidemic Model with Diffusion Terms

具有扩散项的SEIS传染病模型的动力学

Dynamics of Non-autonomous SEIS Epidemic Model with Bilinear Incidence Rate

具有双线性发生率的非自治SEIS传染病模型的分析

Properties of positive sets and negative SEIS about signed measure and Hahn decomposition

关于广义测度正负集的性质与Hahn的分解

A kind of combined epidemic models of SEIR and SEIS with varying total population size

一类总人数变化的SEIR和SEIS组合传染病模型

Design and application of acquisition layout of regional seis - mic profile in Nanxiang basin

南襄盆地区域大剖面采集观测系统的设计与应用

A class of the combination of SEIR and SEIS epidemic model with constant recruitment

具有常数输入的SEIR和SEIS组合传染病模型

It is an important and essential point in the field of earthquake engineering to assess seis - mic damage of building structures .

如何衡量地震作用下结构遭受的损伤程度，一直是地震工程研究领域的一个关键而又难以解决的问题。

Compared to the other software of the same kind both domestic and overseas , the SEIS system has such major features as information integration , data regional and practical characteristics .

较之国内外同类软件，具有信息的集成性、资料的区域性和数据的实用性等主要特点。

In neritic area , the variable period reverberation caused by seabed terrain fluctuation is the main disturbance factor to the seis - mic data quality .

在滩浅海地区，由海底地形起伏引起的变周期鸣震是影响资料品质的主要干扰因素，已有的压制海底（？）

The carbonate reservoir is making up of pore , cranny and cave . The heterogeneity is strong . The quality of seis - mic data is not good .

碳酸盐岩储集体主要由孔、缝、洞组成，非均质性强，地震资料的品质不高，孔、缝、洞在地震资料上的特征不直观，很难直接识别。

In this paper , a kind of SEIS model with general saturated contact rate is studied and the threshold , a basic reproductive number which determines the outcome of the infectious disease is found .

研究具有一般形式饱和接触率SEIS模型渐近性态，得到决定疾病绝灭和持续的阀值-基本再生数R0.当R0（？）

ORFEUS is an acronym for Observatories and Research Facilities for European Seis - mology , and is a joint program of 25 units from 13 European countries .

ORFEUS计划是欧洲地震观测和研究设施的科研计划的简称，是欧洲13个国家25个单位的联合计划。

This paper establishes an SEIS epidemic model that incorporates quarantine items and a varying total population size , obtains the asymptotical stability point and bifurcation , and discusses Hopf bifurcation and limit cycle .

建立了一类具隔离项和人口动态变化的新的SEIS模型，得到了平衡点的渐近稳定条件，讨论了系统的Hopf分岔和极限环。

This paper presents approaches and principles for building Soil Erosion Information System ( SEIS ) in loess regions , discusses the method to extract soil erosion factors automatically using computer and the approaches to build prediction model of soil erosion .

本文介绍了黄土地区土壤侵蚀信息系统的建造原理与方法。分析探讨了土壤侵蚀各因子计算机自动提取的算法，以及土壤侵蚀预测模型的构造方法，并用灰色控制系统的原理确定了模型的参数。

According to the monitoring ability of Shanghai Telemetered Seis - mic Network in 1987 , we calculated its location accuracy with statistical model , the result shows that the horizontal errors of the epicenter is about two kilometers .

根据1987年上海台网的观测能力，导出了估算震中定位误差的统计模型，计算了它的定位精度，结果显示网内的震中位置水平误差大约为2km。

Starting from frequency-domain 3-D acoustic wave equa - tion , this paper presented a 2.5-D crosswell waveform inver - sion method by accounting for the uniqueness of crosswell seis - mic .

从频率域三维声波方程出发，结合井间观测中的三维点源二维介质的特殊性，提出了2.5维井间波形反演方法。

Based on the principle of sequence stratigraphy , through analyzing the features of high resolution seis - mic data , a seismic sequence model is proposed to substitute the seismic convolution model , so as to evaluate the reliability of seismic resolution .

根据层序地层学原理，分析了高分辨率地震资料的特点，并据此提出了一个地震层序模型，以代替地震褶积模型，用以评价地震分辨率的可靠性。

This paper aimed to study a kind of SEIS epidemic model with latent period and Nonlinear infection rate β S ~ qI ~ p. Conditions and threshold to the existence of various equilibriums were established and stability of the equilibriums were discussed .

研究了一类具潜伏期和非线性传染率βSqIp的SEIS流行病模型，确定了各类平衡点存在的条件阈值，讨论了各平衡点的稳定性。

The spectrum of seis - mic wave reflects the filter and absorption effect on the earth . By use of the spectrum of main target layer data , the energy attenuation curve and compensation curve with frequency can be determined , which is the base of nonlinear scanning design .

非线性扫描设计的基础是，地震波的频谱反映了大地的吸收和滤波作用，利用主要目的层段的频谱特征，求出地震波能量随频率变化的衰减曲线，进而求出大地滤波的补偿曲线。