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- back wave tube 返波管
- The sound absorption coefficient of the material was tested by standing wave tube method. 采用驻波管法测试材料的吸声系数。
- Based on the test technique of standing wave tube with double microphones, a four-sensor method is developed. 同时,将双传声器驻波管测量材料声阻抗的原理,推广到四传声器法测量压缩机消声器的传声损失。
- By putting the radar real time back wave image on the top of the generated afterglow picture and their amalgamation, more vivid radar display pictures can be generated. 而将雷达实时回波图像与生成的余晖画面迭加、融合便可生成较为逼真的雷达显示画面。
- Traditional methods to measure absorption coefficient are standing wave tube and reverberation which have some shortcomings. 摘要传统的吸声系数测量方法主要有驻波管法和混响室法，而驻波管法和混响室法都存在着一些缺陷。
- The mechanism of suppressing mode competition in gyrotron traveling wave tube amplifier with helical corrugation is illuminated. 阐述了螺旋波纹波导回旋行波管克服模式竞争的机理。
- Dynamic thermal dissipation of cathode module in electron gun of traveling wave tube(TWT) were theoretically simulated with a newly-developed model. 阴极作为行波管的“心脏”,其内部结构的热耗散是影响行波管预热时间的关键问题,热传导和热辐射是引起阴极组件内部热耗散的最重要因素。
- Based on this work, a broadband and a narrowband disk-loaded waveguide for the relativity traveling wave tube are designed. 在此基础上设计了可用于相对论行波管的一种宽带和一种窄带的盘荷波导结构。
- AGC(automatic gain control) is used, namely, peak voltage of back wave signal after sampled is input to microprocessor, then A/D converter, D/A converter, gain control adjusting circuit to realize back wave signal AGC. 采用自动增益控制,即回波信号的峰值电压经过采样后进入单片机进行 A/D 转换,再经过 D/A 转换和增益控制电路,形成回波增益的自动控制;
- In the dissertation, the coaxial disk-loaded cylindrical waveguide used in SWS of Relativistic Traveling Wave Tube(RTWT) is discussed . 文中讨论了应用于相对论行波管的同轴膜片加载圆波导慢波系统。
- It shows that the well-known 3 DB gain-bandwidth definition for ordinary helix traveliny wave tube can still be used for super-wide-band traveling wave tube. 增益参数工作区域图说明,超宽频带行波管增益通频带仍可采用通常螺旋线行波管增益通频带三分贝的原有规定。
- High efficiency and high linearity space traveling wave tube (TWT) is required for satellite communication system as a high power, high gain microwave amplifier. 摘要作为卫星通讯系统所用的高增益、高功率微波放大器件，行波管的效率和线性是非常重要的。
- We compare which method has the best convergence of the squared magnitude of the power amplifier output error for a memoryless Travelling Wave Tube Amplifier (TWTA). 本篇论文中，针对无记忆性的放大器模型比较三种转换对照表更新方法对于放大器输出的错误误差收敛快慢。
- Rose bushes shoot again after being cut back. 玫瑰丛修剪後还能再长出新枝。
- Numerical simulations and experiments show that improved algorism of LTI is effective to trace rays including back waves and suitable for computerized tomography to complex object. 数值模拟和试验研究表明LTI改进算法是一种有效的射线追踪方法，能追踪回波，适合复杂对象的层析成像。
- A new type of sound absorbing material was made from super-strength gypsum and glass fiber and the sound absorp-tion coefficient of the material was tested by standing wave tube method. 以高强石膏为主要原料,内掺玻璃纤维,在发泡剂的作用下,制备出一种新型多孔吸声材料,采用驻波管法测试材料的吸声系数。
- He trudge three hour in the snow to get back home. 他在雪中跋涉三个钟点才回到家。
- In the amplifying process of traditona1 traveling wave tube (TWT) with longitudinal congregation of electrons, space-charge effect will lead to nonlinear effect affecting output properties of TWT. 摘要在传统行波管的放大过程中，随着电子纵向群聚的加深，由于空间电荷效应导致的非线性效应，影响了行波管的输出性能。
- The crowd fell back to let the players through. 人群后退让运动员们通过。
- Do exercise every day and you'll be back in condition. 每天锻炼锻炼，你很快会恢复健康的。
