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- two frequency selection system 双频拨号制
- The interval between any two frequencies having a ratio of2 to1. 倍频程频率比率为2比1的两个频率的间隔
- The core part of the circuit is differential and frequency selection. 电路核心部分由微分电路和选频电路组成。
- The generator of adaptive FH pattern is designed.By using it and the result of the LQA, adaptive frequency selection is accomplished. 设计了自适应跳频图案发生器,利用信道质量评估结果,完成了自适应频率选择。
- The interval between any two frequencies having a ratio of 2 to 1. 倍频程频率比率为2比1的两个频率的间隔。
- Abstract : The two frequency method for measurring corrosion reaction resistance based on a. c. impedance and numerical integration has been proposed. 摘要 : 提出了基于交流阻抗和数值积分原理的二点频率法。
- All frequency injections of the receiver are controlled by a phase-locked digital synthesizer which allows incremental frequency selection in 10, 1 and 0.1 MHz steps. 接收器的所有频率注入在状态之前被控制-锁了允许第10;1和第0.;1个百万赫兹步骤的逐渐增加的频率选择的数传合成器。
- In the paper,the authors analyzed polar motion data series recently released by IERS,and in combination with spectrum resolution,discussed two frequency of Chandler wobble. 分析了IERS新近公布的经统一归算的极移数据,结合频谱分析中分辨率的有关问题,进一步讨论了Chand ler摆动的双频现象。
- Frequency Selective Filter(FS F )is utilized to design feedback controller in frequency do-main.For each dist urbance frequency,there are only two real coefficients to be tuned. 使用频率选择滤波方法在频域设计反馈控制器,对每个干扰频率,仅需调节两个实系数。
- The superficial layers are often frequency selective to transmission. 表层传播一般都有频率选择性。
- A new two frequency laser alignment system is developed which consists of two Wollaston prisms with the same structure.One is for measurement;another for compensation. 介绍了一种新型自适应双频激光准直系统,该系统利用了两个完全对称的渥拉斯顿棱镜,一个作为测量元件,另一个作为补偿元件。
- The method for generating the second signal is put forward based on the period rule of the phase difference for two frequency signals with the frequency difference. 摘要利用两个有一定频差的频率信号相位差变化的周期性规律提出了一种秒信号产生方法。
- An inspection of (4. 3-5) reveals that for a given K there are two frequencies. 由式(4.;3-5)可见;对于给定的K有两个频率。
- Secondly, it introduces the frequency selection, EMC(Electromagnetic Compatibility), the basic generation theory and modulation of the third civil signal(L5 signal), including LS ranging code, Forward Error Correction, QPSK modulation and Neuman. 其次,介绍了其信号的频段选择、电磁兼容性及其调制和产生的基本原理,包括L5测距码、卷积码、QPSK调制以及Neuman.
- Recommends a principle and method of frequency selection range fixation in order to control the reliability of fuze action through the adoption of sampling discrimination in frequency modulated fuzes. 推荐一种利用采样鉴相技术在调频测距引信中进行选频定距、控制引信可靠作用的原理与方法。
- The two systems of government are polar opposites. 这两种政体正好相反。
- The business is owned by two partners. 这家商行为两名合伙人所拥有。
- We get finally a multilayered LTCC three-stage bandpass filter with a small size and high frequency selectivity. 通过上述场与路相结合的设计方法,获得了尺寸小、频率选择特性好的多层LTCC三级带通滤波器。
- Inside the integrated circuit IC1, after suitable divisions, the two frequencies are sent to the phase comparator that generates the lock voltage of the secondary oscillator. 在综合电路IC1的内部,经过合适的划分,两个频率被送往相位比较仪,这两个频率产生二级振荡器的锁电压。
- It is characterized by good frequency selectivity, low insertion loss and high attenuation of specified frequency. 它具有频率选择性好,通带插损低,对陷波频点抑制较高的优点。