However, the modulation-demodulation of ultraviolet and voice transmission are the key technologies.
然而, 紫外光通信的 调制解调技术 以及语音传输是整个系统的关键难点.
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Remanence is eliminated effectively by using software technique of AC magnetism modulation.
装置采取软件交流磁调制检测技术,有效抵消了剩磁效应.
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Position control of d . c . motors has been done by means of pulse width modulation.
直流电机位置用脉冲宽度调制法控制.
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Pulse-Width Modulation ( PWM ) technique is widely applied in many fields.
脉冲宽度调制 ( PWM ) 技术在许多领域有着广泛的应用.
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Image form a variety of modulation algorithm to display the actual results.
以图像形式展示了各种调制算法的实际运行结果.
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This system of modifying the carrier waves is called " Amplitude Modulation, " or " AM ".
这个改变载波的系统称为 “ 振幅调制 ” 或缩写为 “ AM ”.
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Mode locking can be induced not only by loss modulation, but also by phase modulation.
锁模不仅可用损耗调制取得, 也可用位相调制来得到.
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OFDM is a type of modulation is called orthogonal frequency division multiplexing.
OFDM是一种新型的调制方式,称为正交频分复用.
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But the modulation mechanisms are strongly dependent on the doping element and metal.
但是,调控机理很强地依赖于掺杂元素及金属的类型。
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通过研究比较,在激光、超声波、红外线和毫米波中选择了调频毫米波雷达作为车载雷达探测前方的障碍物。
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在分析线性调频(LFM)信号的基础上,研究了多种基于DRFM的雷达干扰技术,仿真验证了干扰效果,包括:射频噪声干扰、噪声调相干扰、延时干扰和移频干扰等。
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