... premixedbentonite预混合膨润土 premodulation预调制 premonition前兆；预感；预告警告 ...
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提出一种用预调制全息干版制作二维彩虹全息图的相干——非相干记录方法，说明了该方法的基本原理，并进行了实验验证。
A new method is presented for making 2d rainbow holograms by using pre modulated holographic plate. The principle of this method and the related experiment are discussed.
文中讨论了以MSK调制技术结合预调滤波器提高带宽效率的系统构建方案。
To increase the bandwidth efficiency, such a system scheme use the MSK modulation method combining with a premodulation filter.
结果表明：啁啾光脉冲的振幅调制深度和相位扰动深度越大，则压缩后的光脉冲对比度越小；啁啾光脉冲的振幅调制周期和相位扰动周期越小，则压缩光脉冲的预脉冲宽度越大。
The simulations show that more amplitude modulations and phase perturbations lead to lower contrast of the compressed pulse, and bigger modulation cycle results in wider pre-pulse width.
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