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The frequency and the circuit parameters of a rectangular reentrance resonant cavity have been studied by the unperturbed theory and the principle of the equivalent circuit of a ridged waveguide, respectively.

分别采用导体微扰原理和脊波导的等效电路参数，研究了矩形重入谐振腔的频率和电路参数。

V-I transmission matrix method is presented firstly in this paper to analyze the reflection spectral characteristics of fiber grating F-P cavity and the V-I transmission matrix model is established.

本文首次将V-I传输矩阵法用于光纤光栅F-P腔反射光谱特性的分析，并建立了V-I传输矩阵模型。

In recent years, the fiber grating external cavity semiconductor laser regarded as one of the candidate light sources of DWDM systems, has received considerable attention. Usually, it is thought that the lasing wavelength of a FGESL is locked at the Bragg reflection wavelength of fiber grating.

由于FGESL的激射波长主要由光纤光栅的布拉格波长确定，因此选择具有合适布拉格波长的FG就能使FGESL的激射波长处于预置波长处；同时，由于FG的布拉格波长受温度变化的影响相对较小(～0.01nm／℃)，因此FGESL与DFB-LD相比具有更高的温度稳定性。

Based on the influence of reflection phase of fibre Bragg grating on the transmission spectrum of fibre Bragg grating Fabry-Perot cavity, the reason for the error of traditional coupled mode theory when calculating the reflection phase of uniform FBG is analyzed.

基于光纤Bragg光栅反射复振幅相移对FBG法布里-珀罗腔透射谱的影响，分析了传统耦合模理论计算均匀FBG反射复振幅相移产生误差的原因。

In this paper,the reflectivity of cavity mirror s as well as reflective mirror have been measured with this technique.

该方法适用于不同环境下的镜片反射率的精确测定。

Acoustic reflectometry is a technique by which the dimensionsof a cavity can be estimated in the form of an area–distanceprofile.

用声学反射计的激素检查可以以面积－深度剖面的形式，评估一个空腔的三维特征。

Results Surgical instruments broken in the articular cavity took place in 8 cases, injury of the normal tissue including the cartilage, meniscus, and ligaments happened in 40 cases, nerve branch and vascular injured around the inlets in 11 cases, water seeping out in 13 cases, infection following the formation of hematoma in 5 cases, refracture of patella during operation in 1 case, myocardial infarction after operation in 1 case, totally, complications and accidents were seen in 79 cases (5.1％).

结果在施行关节镜检查或术中、术后发生各种并发症及意外者79例(5.1％)，其中发生关节内各种器械断裂8例，关节内正常组织损伤40例，关节镜入孔周围组织结构损伤11例，冲洗液外渗13例，关节血肿、感染5例，术中髌骨再骨折1例，术后突发心肌梗死1例。

The cavity is taken as partially sealed with partial permeable boundary considering the relative permeability of the liner and the medium.

考 虑衬砌和介质的相对渗透性，孔洞处于半封闭状态，边界半透水。

A parametric study is made based on the solutions to illustrate the influence of the minimum quality factor concerning the creep and relaxation behavior of porous medium, the permeability parameter concerning the partial permeable behavior of boundary, and relative rigidity of liner and medium on the frequency response of the cavity.

并进行了算例分析，讨论了反映介质黏弹性性质的最小质量因子，反映孔洞边界半透水性质的渗透性参数及衬砌和介质的相对刚度对问题的影响。分析结果表明：以上参数对圆柱孔洞的频域响应有很大影响。

By comparing the theoretical and measured results, we find that the rectangular cavity perturbation method has relative high precision in complex permittivity.

详细介绍了矩形谐振腔微扰法的基本原理；通过对比标准物质的测量结果发现，矩形谐振腔微扰法测量复介电常数具有比较高的测量精度，且使用样品少。

I'm going tor her!

我这就去救她！

As rise are design to help keep a several toney , a brain chemical at continues lever.

SSRI被设计来帮助保持血液中的复合胺即在大脑中一个连续水平的化学物质。