...光子都没有与介质发生任何相互作用，因此含有精确的定位信息,这是真正需要的原始数据；第二种是散射符合（scatter coincidence），探测到的两个光子虽然来源于同一湮灭事件，但在到达探测器前两个光子中至少有一个被散射而偏离了原来的飞行方向。
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比较了同时考虑表面散射和晶界散射的电导理论得到的电导率公式与实验结果，不同薄膜厚度电导率的理论结果与实验结果符合较好。
The comparison of the theoretical results of the model proposed by Fan with the experimental results indicates that the calculated results by theory agree well with the experimental results.
由场平均方法得到的等效磁导率与散射参数反演得到的等效磁导率进行了比较，两种结果符合一致。
The result of the effective permeability is calculated both by the field summation and the scattering parameters and the results have a good agreement.
计算结果表明核子-核子弹性散射的位相变化使理论微分截面增大，改进了理论值与实验数据的符合。
It is shown that a phase variation of the nucleon-nucleon elastic scattering amplitude leads to a large increase in the calculated differential cross-section and a substantial improvement.
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