Through contrasting and analyzing, the particle vibration velocity were forecasted by the orderliness formula of attenuation of blasting earthquake wave is precise relatively.
经对比分析，所得爆破地震波衰减规律公式预测的质点振动速度具有较高的精度。
The scattering of fog particle influence the images by three aspects: the attenuation of object light, the scattering of air light and the multi-scattering of fog particle.
雾滴的散射通过三个方面对图像产生影响：雾滴对成像光线的透射衰减，空气光即非成像光线的散射及雾滴的多次散射。
Based on the analysis of the existing theoretical model of ultrasonic attenuation, the model for ultrasonic attenuation of composite particle size distribution was established.
在分析现有超声波衰减理论模型的基础上，建立了混合粒度分布下超声波的衰减模型。
The average electron density in linear attenuation zone is about 10 ~ (-5) of neutral particle density, and can overcast wider area.
平缓衰减区中的平均电子密度约为中性分子密度的十万分之一，并且可以覆盖较大范围。
The average electron density in linear attenuation zone is about 10 ~ (-5) of neutral particle density, and can overcast wider area.
平缓衰减区中的平均电子密度约为中性分子密度的十万分之一，并且可以覆盖较大范围。
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