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- The high frequency harmonic has been a harmful effect of power electronics, we must adopt the valid measure to take in to repress. 高次谐波已成为电力系统的一大“公害”，必须采取有效的措施来加以抑制。
- S.L. Lu, C.E. Lin, and C.L. Huang, "Power frequency harmonic measurement using integer periodic extension method," Electric Power Systems Research, vol. 44, 1998, pp. 107-115. 叶迺昆，电力谐波频谱分析之改善，国立中山大学电机工程学系硕士论文，民国八十七年六月。
- Large amplitudes of cables can be induced by low order frequency harmonic oscillations.Then,some destructive accidents will happen,and some efficient control methods will be needed. 缆索结构系统在外部激励作用下将产生低频谐振,会导致大的振幅而可能有破坏性事故发生,故需要一种有效的方法控制这种振动。
- Filtering Intermediate Frequency Harmonic Voltage 中频谐波治理
- modulation frequency harmonic distortion 调制频率谐波畸变
- high frequency harmonic oscillator 高频谐振子
- The low frequency harmonics are regulation and the intensity is strong in the formant of the aged. 结果：老年人嗓音基频下降，80岁以上男性基频升高。
- Computer simulation and experiments show that the active power filter system can effectively suppress the high frequency harmonics and reactive currents at the same time. 通过计算机仿真及试验证明，该有源电力滤波系统能很好地同时抑制电网中的高次谐波及无功电流。
- The low frequency harmonics are regulation and the intensity is strong in the formant of the aged.Thedifference reduces in voice between male and female. 老年期共振峰低频谐波规则，声能强，男女声之间差异减少。
- The first consideration when switching digital signals is providing adequate bandwidth to preserve the frequency harmonics of the digital pulse and their power spectral distribution. 切换数字信号时需要考虑的第一项因素是提供足够的带宽，以保护数字脉冲的高次谐波及其功率谱分布。
- The simulation results show that high frequency harmonics will seriously affect the accuracy of ESG strapdown navigation system, so it must be compensated in the disturbing torque models. 仿真结果表明;现结构静电陀螺仪组成捷联系统;高次谐波将严重影响系统精度的提高;必须在干扰力矩模型中予以补偿.
- He varied the transmission frequency. 他变换了无线电传送的频率。
- A unit of frequency equal to one cycle per second. 赫兹频率的单位，等于每秒一周
- Fatal accidents have decreased in frequency over recent years. 近年来死亡事故发生的频率已经下降。
- A Methane Gas Sensor with Optic Fiber Based on Frequency Harmonic Detection Technique 一种基于谐波检测技术的光纤甲烷气体传感器
- A Novel Detective Method for Fundamental Current and Any Term Frequency Harmonic Current 基波电流和任意次数谐波电流检测新方法
- We can often correlate age with frequency of illness. 年龄的大小往往与发病率有关。
- Accidents on that highway are happening with increasing frequency. 那条高速公路上车祸发生得越来越频繁。
- Even and Odd Coherent States of a Complex Frequency Harmonic Oscillator and Calculation of Their Quantum Fluctuation 复频率谐振子的偶奇相干态及其量子涨落计算
- Technical analysis of the wrong operation in substation because of different frequency harmonic 变电所由于分频谐振引起误动作的技术分析
