The technology recently blossomed following passing a technical hurdle of altered positron movement in strong magnetic field thus affecting the resolution of PET images and attenuation correction.
最近的技术蓬勃发展，以下通过在强磁场，从而影响PET图像分辨率和衰减校正领域的改变正电子的运动技术障碍。
On the basis of the observational data, this paper also discusses the probable reasons causing the variation of the coda wave attenuation rate both before and after strong events.
由观测事实出发本文讨论了地震尾波衰减率在大地震前后发生变化的可能原因。
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。
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