瞬态

The model not only provides a fast means of modeling transients in gain-clamped EDFA′s, but also shows clearly how the laser relaxation oscillation frequency, damping constant, and oscillation amplitude are affected by design parameters through explicit analytical expressions. Modeling shows quantitative agreement with experiments when the spectral-hole burning effect plays minor role on EDFA transients.

首次发现全光链路控制EDFA瞬态的WDM系统中，通过环形腔激光反馈产生的补偿信号，在系统要求的典型功率范围内就可能发生受激布里渊散射，并因此损伤系统性能。

Based on the introduction of the theory of the polymer solutions, the mechanisms of DNA separation by the capillary electrophoresis in non-gel sieving matrices are reviewed in this paper, which includes Ogston sieving model, various modified reptation models, transient entanglement coupling mechanisms and its improved mechanisms.

本文在介绍高分子溶液理论的基础上，综述了DNA在毛细管电泳无胶筛分介质中的分离机理，主要包括Ogston筛分模型、各种修正的爬行模型、瞬态缠结偶合机理及其改进机理等。

Electron transfer reaction between the radical cations of purine nucleotides and some aromatic amino acids was studied by use of pulse radiolytic techniques. Time-resolved spectroscopic evidence revealed that the one-electron-oxidized radicals of dAMP and dGMP can be efficiently repaired by tyrosine and tryptophan.

鉴于在DNA光敏损伤过程中主要生成嘌呤碱基阳离子自由基，利用脉冲辐解技术研究了嘌呤碱基阳离子自由基与部分芳香氨基酸的相互作用，获得了酪氨酸和色氨酸对单电子氧化的dAMP和dGMP经快速电子转移修复的瞬态吸收光谱证据。

The frequency characteristics of instant- taneous signal of main abnormalities in diesesl engines,including valve sound, piston pin sound,connecting rod bearing sound and sound from the main bearing of crankshaft are analyzed.

从使用角度出发，采用频域分析法，分析了柴油机中气门、活塞销、连杆轴承、曲轴主轴承等部位主要异响的瞬态信号频率特征。

The heat conduction model of the PE fuel with the surface melting and pyrolyzing is developed for the H2O2-PE hybrid rocket motor. Combining with the energy fluxes balance above fuel surface, the simulation and calculation of transient heat conduction of the PE fuel with liquid layer while melting and pyrolyzing are considered by use of the moving coordinates.

建立了PE燃料的熔化、热解、导热模型，应用动坐标系，结合燃料表面热环境，对具有液体层的PE燃料的熔化、热解和内部瞬态导热过程进行了模拟计算，计算的PE燃料退移速率与国外同类试验的测量结果符合较好。

According to the analysis and computational results in this thesis, although the actual structure and work conditions of the pressure vessel in nuclear power station are much more complex than that of the pressure vessel model, the program FEARPV still can get quite good convergence on the plasticity andcontact iteration. And also the program FEARPV has good value stability, and good regularity. During the heating, compression, constant temperature, constant pressure, cooling and decompression process, the regularity is basically in common with that of the pressure vessel model.

由本文分析计算可知，虽然电站核压力容器的结构及计算工况较压力容器模拟体复杂得多，然而反应堆压力容器瞬态密封有限元分析程序对塑性迭代和接触迭代仍具有很好的收敛性，数值稳定性好，得到的结果具有良好的规律性，在升温、升压、恒温、恒压、降温和降压等过程中其规律和压力容器模拟体基本相似。

Furthermore, the profile is easy to machine, and the scroll plate with the AAL profile can be made somewhat more compact than the scroll plate with involute of circle on condition of the same discharge volume.

对AAL型线齿端采用对称圆弧修正进行了研究，讨论了修正型线的取值范围，推导了型线修正后的工作腔容积。分析了瞬态的排气通流面积和排气流速。

To program a command file of transient analyze that is also available to any luffing location, obtain the dynamic response results including simulation nephograms of dynamics stress and displacement and curve of dynamic stress of representative nodes.

获得了臂架系统突然起吊和制动时的瞬态动力响应，包括动应力、动位移响应仿真云图和典型节点的动应力时间历程曲线。

This paper investigated the flow characteristics of the pump, deduced the equation of the instantaneous flow and the pulsation of the pump.

研究了平衡式复合齿轮泵的流量特性，给出了瞬态流量公式及流量脉动计算式。

Basing Ansys software, automatic hydraulic press of steel wire-wound is analysed through transient dynamics in order to know its base,beam and pillars' stress or displacement.

基于ANSYS大型通用有限元分析软件，通过对缠绕型全自动液压压砖机的瞬态动力学分析，可以确定在整个压制过程中的主机底座、横梁和立柱的应力或位移变化情况。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。