1、

in this case, the limited frequency range leads to restricted speech quality compared to wideband speech.

在这种情况下,窄带语音质量与相应的宽带语音质量相比有很大差距。

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2、

However, the phase noise and frequency range of CMOS voltage controlled ring oscillator are limited, and need further research.

然而,CMOS环形压控振荡器在相位噪声、频率调节范围等性能上仍然有诸多的限制,需要更加深入的研究。

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3、

The basic working principle of magnetic head is described, frequency response curve is given as gap-depletion expression, and gap-depletion is explained to be the main cause that the frequency response range of tape recorder is limited.

阐述了磁头的基本工作原理,绘制了磁头的频率响应曲线,给出了缝隙损耗的计算公式,揭示了重放磁头的缝隙损耗是造成磁记录的频率响应范围受到限制的主要原因。

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4、

Spiral coil pipe is shaped by means of utilizing the effect of intermediate frequency induction in order to quickly heat the limited area of a steel pipe, making the heated pipe within its plastic deformation range follow the preset track at a definite speed.

螺旋盘管的成型是利用中频感应效应使管子在小区域内快速加热,被加热的管子在其塑性变形范围内,按预先设定的轨道以一定的速度向前推进达到成型。

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5、

This paper discusses the sampling criteria of the intermediate frequency signal in the linear frequency modulated continuous wave radar, and analyses the spectrum leakage phenomena that exist in its discrete spectrum and the features of the maximum distinguishable range that should be limited.

本文探讨了对线性调频连续波雷达的中频信号采样所需遵循的准则,分析了其离散频谱具有的频谱泄漏现象和需要限制可分辨最大作用距离的特性。

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