The spectral compressor compresses a pre-selected portion of the high frequency band and maps the compressed high frequency band to a lower band limited frequency range.
频谱压缩器压缩高频频带的预选择部分，并将压缩的高频频带映射到较低的有限带宽频率范围。
Experiments and simulations show that the proposed system can operate in audio switch frequency range without audio noise from the motor load, meanwhile, EMI can be limited to low level.
实验与仿真结果表明：该系统采用音频开关而不导致电机负载的音频噪声，同时使EMI能被限制在低电平。
And some foreign power supply units for electroplating also have certain disadvantages, such as limited adjustable range of impulse width, and non-adjustable impulse frequency.
某些国外电镀电源虽然也实现了程控，但也存在一定的缺陷，如脉宽调节范围较窄，脉冲频率不可调等。
The basic task of power system operation is to maintain frequency to its scheduled value and guarantee frequency error is in a limited range.
电力系统运行的基本任务是维持系统频率为计划值，且保证频率偏移不超过允许值。
The depth range of GPR is limited by the electrical conductivity of the ground, the transmitted center frequency and the radiated power.
探测深度不好确定，与底层导电性、发射波中心频率和发射功率有关。
The depth range of GPR is limited by the electrical conductivity of the ground, the transmitted center frequency and the radiated power.
探测深度不好确定，与底层导电性、发射波中心频率和发射功率有关。
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