minimum average field

A mean field limit of the contact process in a random environment with large range;

随机环境中长程接触过程的平均场极限

Numerical calculation for AlSb crystal showed that the mean number of magnetorpolaron decreases with increasing magnetic field;the mean number of magnetopolaron increases also with increasing temperature;the action of electronspin and the interaction between phonons increases all with incre.

对AlSb晶体所作的数值计算结果表明,随着磁场的加强,磁极化子平均数减少;随着温度的增加,磁极化子平均数也增加;随着温度的增加,电子自旋作用以及声子之间相互作用都加强;随着磁场的加强,电子自旋作用增加而声子之间相互作用基本不变。

The analysis on a yearly variation of the Sun s shadow and a yearly variation of the mean strength of the Solar magnetic field confirmed that there is a correlation between them.

利用１９９５年１０月至１９９７年９月间西藏空气簇射阵列采集到的数据，再一次观测到了１０ＴｅＶ宇宙线的太阳阴影；仔细分析了１９９０年６月至１９９７年９月间观测到的１０ＴｅＶ宇宙线的太阳阴影位置，对其位置的偏移及变化行为给出了定性的解释；结合相同时期的太阳表面平均磁场强度，进一步证实了日影偏离度与太阳平均磁场的关联；利用较为完整的宇宙线成分测量数据，对日影偏离度与太阳平均磁场强度间的定量关系作了成分上的修正。