图27所示电路是一个幅值固定不变的三角波发生器。该电路产生频率可变的三角波信号，但其幅值与频率无关。
A constant amplitude triangular-wave generator is shown in Figure 27. This circuit provides a variable frequency triangular wave whose amplitude is independent of frequency.
给出了等离子体电子密度线性分布和指数分布时，雷达电磁波的频率、电子碰撞频率、等离子体密度对电磁波衰减的影响。
For different plasma-density profiles, the effects of the frequency of EM wave, collisional frequency and plasma density on the attenuation of electromagnetic wave were discussed.
连续波与断续波（续波）的频率、电流、电压、脉冲宽度均相同，声电波的频率、电流、电压、脉冲宽度均为不断变化的。
Frequency, current, voltage and pulse width of successive wave and intermittent wave were similar. Frequency, current, voltage and pulse width of sound electric wave changed continuously.
本文通过对复小波的研究发现复小波变换的相位信息能用于频率检测和谐波分析，提出了基于复小波变换相位信息的频率和谐波检测新算法。
A novel method is proposed in this paper by research on complex wavelet, in which phase information of complex wavelet transforms is used to detect frequency and harmonics.
本文提出一种新的方法，在频率域中制作波动理论的合成记录，给出了与克希霍夫绕射波方程等价的频率域中的绕射波方程。
This paper presented a new method of generating synthetic, seismograms of wave theory in frequency domain and gave the diffraction equation in frequency domain, which is equivalent to Kirchhoff one.
发现了电磁波相对于均匀等离子体分布的一些变化规律：HE模式的电磁波截止频率降低，EH模式的电磁波截止频率升高。
The principles of variation compared with homogeneous conditions are discovered: the cut-off frequencies of HE waves decrease, while the cut-off frequencies of EH waves increase.
计算表明 ，当电磁波的频率接近电子碰撞频率时 ，磁等离子体对电磁波的吸收达到最大值。
The results illustrate that the collisional absorption have a maximum value when the collision frequency is near the radiation frequency.
计算表明 ，当电磁波的频率接近电子碰撞频率时 ，磁等离子体对电磁波的吸收达到最大值。
The results illustrate that the collisional absorption have a maximum value when the collision frequency is near the radiation frequency.
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