Based on the observed data of strong motion acceleration in Yunnan region, the surface attenuation pattern at horizontal and vertical peak acceleration is studied by regressive analyzing method.
根据云南地区的实测强震加速度资料，采用回归分析法研究了云南地区的地面水平、垂直峰值加速度衰减规律。
The attenuation formulas both of vertical and horizontal vibrating displacements are obtained.
得到竖向和水平向振动位移衰减公式。
It studies the vertical uniformity of single mode fiber attenuation through measurement and gives its evaluation on the uniformity of present single mode fibers.
通过测试研究了单模光纤衰减的纵向均匀性，并对目前单模光纤衰减的纵向均匀性作出了评价。
An empirical formula was derived, which indicated the attenuation of the seismic waves at different distances along the vertical, horizontal and horizontal tangential directions.
笔者提出了沿垂直方向、水平径向和水平切向振动时不同距离地震波衰减规律的经验公式。
In a model with vertical incidence of plane electromagnetic wave into plasma slabs with metal underlay, the attenuation of electromagnetic wave and reflected power are deduced.
采用垂直入射具有金属衬底的均匀等离子体模型，对不同入射频率的电磁波的衰减以及总出入射功率比进行了数值模拟。
The attenuation rate of horizontal vibration is different from that of vertical vibration and could not be expressed by using a same formula.
水平向振动与竖向振动衰减快慢不同，难以用同一衰减公式表示等有意义的结论。
The peak pressure attenuation of shock in water in borehole axis direction was slower than the direction vertical to the borehole axis.
水中冲击波压力峰值在炮孔轴线上衰减比垂直于炮孔轴线向上衰减慢。
Experimental investigation was carried out to study the pressure wave speed and its attenuation for gas-liquid bubbly flow in vertical upward tube.
研究了垂直上升管内气液两相泡状流压力波的传播速度和衰减规律。
Experimental investigation was carried out to study the pressure wave speed and its attenuation for gas-liquid bubbly flow in vertical upward tube.
研究了垂直上升管内气液两相泡状流压力波的传播速度和衰减规律。
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