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The point source model for calculating transfer matrix of two-dimensional rectangular cavity has been extensively used.

计算二维矩形声腔传递矩阵的点源模型已在实际工程中取得了广泛应用，但是点源模型本身的奇异性使得传递矩阵的计算不精确。

A comparison of the existing sound source model for calculating transfer matrix of two-dimensional rectangular acoustic cavity is performed in this paper.

在比较现有二维矩形声腔的声源计算模型特点的基础上，提出了一种新的正方形线声源计算模型，用于计算基于模态级数叠加法的压力响应函数。

Monster appears to be an upright rectangular prism that has come to life, spewing light from its mouth and brain cavity.

怪物看上去像一个活过来的直立的六棱柱，从嘴和颅腔里喷射出光线。

The animal is placed in a lateral recumbency and 2 needles are placed in the abdominal cavity.

该动物被放置在一个侧卧和2针腔放置在腹部。

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。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。