fra

  • abbr.弗拉;Federal Railroad Administration <美>联邦铁路管理局
frafra
  1. An efficient and stable algorithm for FRA design has been proposed .

    提出了一种高效、稳定的光纤喇曼放大器仿真算法。

  2. Diagnosis of Winding Deformation of Transformer by Impedance Method and FRA

    阻抗法和频响法诊断电力变压器绕组变形

  3. The main way on the detection of transformer winding deformation is FRA method .

    目前判断变压器绕组变形主要采用频率响应分析法。

  4. Band study on transformer winding deformation based on FRA

    基于FRA的变压器绕组变形的分频段研究

  5. The optimal design for multi-channels FRA pump with modified genetic arithmetic

    用改进的遗传算法对多信道FRA泵浦源进行优化设计

  6. A New Technology for Diagnosing Transformer Windings Deformation & FRA

    变压器绕组变形诊断新技术&频响(FRA)法

  7. On the other hand , the number of FRA can increase power cost of system , too .

    喇曼放大器的级数的增多也会使系统功率代价增加。

  8. Then software for FRA 's simulation is particularly designed to meet the demand from users .

    根据使用者的需求对光纤喇曼放大系统模拟软件进行详细的设计。

  9. Practice of Diagnosis of Transformer Winding Deformation by Combination of FRA and SCR Method

    频率响应法结合短路阻抗法诊断变压器绕组变形状况的实践

  10. Thirdly , a new analytical expression for the noise figure of FRA is derived .

    第四,给出了一种相比已有文献更为精确的FRA噪声系数的解析表达式。

  11. Nothing but Fra Luca 's death could remove all danger .

    只有卢卡修士死了才免除一切危险。

  12. Fiber Raman amplifier ( FRA ) is full communication windows amplifier based on the fiber .

    拉曼光纤放大器(FRA)是一种光纤基的全波段放大器。

  13. This paper provides the balance theory and design method for a new type of gain flattened wide-band FRA .

    本文提出了一种新的宽带FRA增益平坦化的补偿理论和设计方法。

  14. There are a lot of noise in FRA .

    在喇曼放大器中,存在很多噪声。

  15. The Application and Risk-warding Measures of the FRA in the Rate Risk Management of China 's Commercial Bank

    远期利率协议在我国商业银行利率风险管理中的运用及其风险控制

  16. Some note-worthy problems about analysis of fra nework vertical vibration are also Proposed .

    文中还对框架的竖向振动分析提出一些应注意的问题。

  17. Conclusion FRA can release fluoride slowly and steadily .

    结论本实验FRA试样具有稳定缓释氟离子的能力。

  18. ASE is a more important noise in FRA .

    自发辐射噪声是放大器噪声中一种比较重要的噪声。

  19. In the second chapter , a theoretical model of FRAs is presented and the main characteristics of FRA are discussed .

    接着在第二章中对FRA的理论模型进行了较全面的分析,并讨论了FRA的主要工作特性。

  20. With the introduction of overlapping factor , a new simulation model for fiber Raman amplifiers ( FRA ) is proposed .

    通过引入交迭因子的概念,提出了光纤拉曼放大器(FRA)仿真的改进模型。

  21. The important parameters to describe the gain of the FRA are the Raman gain coefficient and effective Raman gain .

    拉曼增益系数和拉曼增益谱是衡量光纤拉曼放大器增益性能的两个重要指标参数。

  22. The FRA gain mechanism can suppress the gain competition effectively and make the present multi-wavelength laser stable at room temperature .

    光纤拉曼增益机制能够有效地抑制这种增益竞争,从而使得提出的多波长激光器能够在室温下输出稳定。

  23. FRA can extend the transfers bandwidth , increase the transfers ' speed and the distance without relay .

    它能够增大传输带宽,提高传输速率,增加无中继传输距离,是目前光放大器的研究热点。

  24. Application of the T-DNA Tagging in Plant Genomics Fra

    T-DNA标签在植物基因组中的应用

  25. Studies on the mechanism of intracellular cAMP reduction in Fra ( X ): Two groups of PBMC were studied .

    脆性X综合征细胞内CAMP水平降低机制探讨:本研究设立实验及对照两个组。实验组加入洲P,封闭刚m基因;

  26. FRAs , FRA Rates and Sensitivity Analysis

    FRA及其价格确定与敏感性分析

  27. The essential theory , Raman gain spectrum , gain characteristics , the configuration and pump sources of the FRA are analyzed .

    研究FRA的基本原理,喇曼增益谱,增益特性和结构模型,介绍FRA的泵浦源;

  28. But FRA is affected by many factors , so the persons using FRA instrument should have high measuring and analysing ability .

    但是,频响分析法也受到诸多因素的影响,要求试验人员具有较高的测量分析能力。

  29. The FRA is an agreement that two parties agree today to a future exchange of cash flows based on two different interest rates .

    远期合约是双方在场外交易市场直接谈判达成的协议。

  30. However , because of the complexity and uncertainty of flood , the analysis of uncertain in FRA is a current hot research topic .

    然而由于影响洪水风险评估的因素具有复杂性,多源性及不确定性的特点,洪水风险评估中的不确定性分析是一个当前的研究热点和难点。