| 1. | Pressure sensitivity , harmonic frequency and directive property are important indexes to characterize its performances
声压灵敏度、谐振频率和空间指向性是衡量其性能的重要指标。 |
| 2. | Two - dimensional harmonics frequency estimation in additive gaussian noise background based on quaternion and hypercomplex
四元数和超复数在加性高斯噪声背景下二维谐波频率估计中的应用 |
| 3. | The harmonic frequency derived from theoretical analysis is 5283 . 7hz , which agrees with that derived from experiments 5300 hz
7hz ,实验测量结果为5300hz ,理论分析结果与实验结果基本一致。 |
| 4. | A high efficiency dual - band rf power amplifier has an output and / or input of a high frequency transistor well terminated at the second harmonic frequency for dual - band operation
本发明乃一种高效率双频射频功率放大器，提供高频电晶体的输出端与?或输入端于双频操作中有良好的二阶谐波终止。 |
| 5. | According to iec ' s standards involved , voltage fluctuation and flicker become a index of power quality . but the research in those aspects such as harmonic frequency excursion and ect
然而，人们对于电能质量中诸如谐波、频率偏移等方面的研究相对电压波动和闪变来说要多得多，研究得也较成熟。 |
| 6. | Crystals varied in patterns or grid - sizes - color combinations - and tones . crystals follow harmonic frequencies and could be used with an instrument that looks like a tuning fork
水晶有不同的形状、晶格、大小、颜色组合以及不同音调。水晶随着调和的频率振动和能够视为调音叉子一样的工具来使用。 |
| 7. | By regulating the compensation current injecting into the compensation winding of the reactor , the reactor inductance at different harmonic frequencies can be independently and continuously adjusted
有源电抗器由一对耦合绕组和一个补偿电流发生器组成，通过控制有源电抗器补偿绕组中的谐波磁通补偿电流，可以独立且连续地调节电抗器在不同谐波频率下的电感量。 |
| 8. | At first , the character of millimeter wave and frequency multipliers in millimeter wave band is introduced . based on the principle of harmonic frequency extraction in nonlinear device , we present the avalanche diode high order frequency multipliers in w band
利用雪崩效应中强烈的非线性电感特性,基于非线性器件谐波提取的思想,对倍频器电路进行了优化仿真,采用雪崩倍频二极管研制了w波段雪崩高次倍频器。 |
| 9. | In the distribution system , many capacitor banks are applied to decrease the loss of the network . the harmonic resonance may be incurred between the network and the capacitor banks in the harmonic frequency , thus the security of the system may be destroyed because of the high harmonic distortion level
配电网中装设了大量的电容器进行无功优化来降低网损，但在谐波频率下，容易产生系统与电容器之间的谐波谐振或谐波放大，从而使系统的谐波畸变率变大，破坏了系统的安全运行。 |
| 10. | This paper investigates the pressure sensitivity of an interferometric fiber - optic hydrophone element with a concentric mandrel including an enhanced sensitivity layer based on the theory of elastic mechanics and finite element method ( fem ) and then investigates its harmonic frequency and vertical directional property using fem , and verifies all the results derived from theoretic analysis at last
本文分别基于弹性力学的理论和有限元的方法对含弹性增敏层的同轴干涉型光纤水听器基元的声压灵敏度进行研究,并基于有限元的方法对其谐振频率和垂直指向性进行分析,最后用实验对各项分析结果进行了验证。 |
