在一些地方，这种称为“白色空间”的用来隔离工作频道的未使用的频率最多占到电视转播中可用带宽的70%。
In some places, this so-called "white space" of unused frequencies separating working channels amounted to as much as 70% of the total bandwidth available for television broadcasting.
某些地方，这种将工作频道与闲置频率分隔开的“空白频段”，统共占到了电视广播全部可用带宽的差不多70%。
In some places, this "white space" of unused frequencies separating working channels amounted to as much as 70% of the total bandwidth available for television broadcasting.
这种关系表明雷达可用的信号带宽是有一定限制的，随着工作频率的下降和成像斜角的增大，可用的信号带宽会变得越来越小。
The relationship shows that the maximum bandwidth is limited for these algorithms and becomes narrow when the center frequency is lower and the imaging squint angle is larger.
分析压电式超声波换能器的等效电路，并由等效电路输入阻抗的导纳圆图确定了换能器的元器件参数以及谐振频率、机械品质因数和工作带宽等特征参量。
The device parameter as well as resonance frequency, mechanical quality factor and work band width were determined by the equivalent circuit input impedance admittance circle diagram.
新的设备具有的LDMOS的射频带宽的两倍，这样，一个功率放大器（PA）的可支持多个工作频率。
The new devices have twice the RF bandwidth of LDMOS, so that one power amplifier (PA) can support multiple operating frequencies.
在利用直接数字式合成方法产生周期信号时，信号的频率分辨率和带宽直接受限于合成系统的工作频率和存储容量。
In the direct digital synthesis of periodic signals, the frequency resolutions and bands of the synthesized signals are limited by the working frequency and data capacity of the synthesizing system.
本章通过分析提出了距离多普勒等成像方法中信号带宽、工作频率和成像斜角之间存在的特定关系。
The special relationship among signal bandwidth, center frequency and imaging squint angle in the Range-Doppler imaging algorithm and other methods is also presented in the Chapter 3.
简要概述了其实现方法，并对其反射、透射、吸收、工作带宽和最佳工作频率等特性参数进行了分析与计算。
Its realization is summarized, characteristic parameters such as reflection, transmission, absorption, bandwidth and optimal frequency responding to different function are also analyzed and computed.
该文通过对R-D成像方法的分析，推导了在R-D成像方法下雷达工作频率，信号带宽与成像角之间的关系，并用计算机仿真进行了验证。
With the analysis of R-D algorithm, the relationship between the frequency of radar, the signal frequency width and the squint angle is deduced. The result is identified by computer simulation.
但集成运放带宽有限，所以目前的有源滤波电路的工作频率难以做得很高。
But the integrated operational amplifier bandwidth is limited, so the current active filter circuit is difficult to do very high operating frequencies.
但集成运放带宽有限，所以目前的有源滤波电路的工作频率难以做得很高。
But the integrated operational amplifier bandwidth is limited, so the current active filter circuit is difficult to do very high operating frequencies.
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