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In the work, employing a function with four undetermined parameters to model the source wavelet, an analytical relation between Q-factor and envelope peak instantaneous frequency is derived from the theory of one-way waves propagating in an anelastic medium; at the same time, a method for extracting instantaneous frequency in wavelet domain is developed for improving the precision and anti-noise performance of IF estimation, and based on these, a method called EPIF in wavelet domain is proposed for estimating Q-factor of VSP data.

本文采用一个具有4个待定参数的函数去逼近震源子波，利用黏弹介质中单程波传播理论推导出了地震子波包络峰值处瞬时频率和品质因子之间的解析关系；同时，为提高瞬时频率的估计精度和抗噪性能，在小波域中发展了一种计算瞬时频率的方法，并在此基础上提出了估算VSP资料Q值的方法，简称小波域包络峰值处瞬时频率法。

This has been proved quantitatively in both time domain and frequency domain in this paper.

本文在时间域和频率域上定量地证明了这点。

Do not confuse the above definitions of lead/lag in the spatial domain with the electrical definitions of lead/lag in the radian domain.

不要把上面定义的空间域的超前/滞后定义与电学定义的弧度域的超前/滞后混淆）。

First, what is the real secondary domain names: the secondary domain name is the network of friends in his capacity as the levy.

一、什么样的才是真正的二级域名：二级域名是网络朋友身份的像征。

Firstly, based on the Duhamel integral and dynamic reciprocity theorem, the generalized Duhamel integral expression is written to a point in the half infinity space under moving load. Secondly, the train load is considered as a series of centralized loads with fixed distance. The dynamic response expression of a point in frequency domain and frequencywavenumber domain are derived out through the Floquet transform and Fourier transform under a moving load, and then the dynamic response of a point is gotten ...

以Duhamel积分为基础，首先应用动力互等定理，得到了移动荷载作用下，半无限大弹性连续介质空间上任意点的动力响应的广义Duhamel积分表达式；然后将列车荷载简化考虑为一系列具有一定间距的集中荷载，采用Floquet变换、Fourier变换等方法，得到了一个集中移动荷载作用下任意拾振点ξ的动力响应在频域和频率波数域内的表达式，进而由叠加原理得到列车荷载作用下的动力响应解；最后，通过算例说明该算法的适用性。

The website that shows on this interface puts on record date has for ICP of another name for Jiangxi Province 778899, and mix in industry with this website domain name the ICP/IP address of informatization ministry / domain name information puts on record administrative system undertakes inquiring, the information that feedbacks result is your place inquiry however is in put on record in the library nonexistent!

该界面上显示的网站备案号为赣ICP备778899，而以该网站域名在工业和信息化部的ICP/IP地址/域名信息备案管理系统进行查询，所反馈的结果却是您所查询的信息在备案库中不存在！

Two finite element analyses were conducted. First, the poroelastic dynamic equations were transformed to Laplace domain and the Galerkin finite element approach is applied to derive the stiffness matrix of rectangular porous element for conducting the finite element frequency domain analysis.

为探讨空间声场之特性，本文将分析方法归纳为二部份，第一部份应用拉普拉斯转换后之多孔线性弹性动态方程以二维矩形多孔弹性元素及 Galerkin有限元素法推导并进行有限元素频域分析。

The soil volumetric moisture content can be determined by the Time Domain Reflectometry and the Frequency Domain Reflectometry.

其中烘干法简单可靠，但是不可以实现计算机实时监测；射线法测试结果精确，但是成本太高，还有辐射危险；TDR和FDR的是目前比较流行的测试方法，但是不适合实时监测土壤剖面含水率。

If you are NOT the current registrant for this domain name and want to register this domain, you may place a backorder.

如果你不是这个域名的当今的注册人并且想要记录这个域名，你可以安置backorder。

Apart from this, Dataopedia also gives information about domain registrant and domain details.

除此之外， Dataopedia还提供了关于域名注册和域名细节。

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。