We also investigate the relationship between the total attenuation coefficient and the energy density, pulse duration, and pulse repetition.

我们研究了衰减系数和能量密度、脉冲宽度及脉冲频率之间的关系。

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Single wavelength collimation transmittance experiment is designed and conducted, with total effective attenuation coefficient of tissue phantoms being obtained.

设计单波长准直光透射实验并通过实验测量组织模拟样品的总衰减系数；

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With displacement operator method the total quantum noise is obtained, and a quantum channel model with attenuation and noise is proposed.

用位移算符方法计算量子噪声的累加，同时建立了有衰减和噪声时的信道的量子模型。

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