The subject interpreted the feasibility of crash and separating of rock and charcoal by doing a lot of experiments . it also interpreted the fluctuation of a single sample and the stability of all the samples . the strength of a single waste rock and charcoal was more fluctuated , but on the whole it trends to stable 也即在煤矸实验中单独就一块煤、矸来讲其强度是特别离散，但从整体一批矿块来讲其强度服从一种正态分太原理工大学硕士学位论文布，其强度整体上趋于一个稳定值，从大量的实验说明了这一点。
Without magnetic field , transmitivity t equals 1 ; at the moment of 50s , when the magnetic field is added , t increases rapidly , then decreases gradually , and increases again when it is minimum , later reaches a stable value slowly ; at the time of 350s , when the magnetic field is got rid of , t decreases instantaneously and increases by inches until it is a stable value 未加外磁场时，光透射率下一； 505施加外磁场的瞬间， t迅速上升，随着时间的推移逐渐下降，减小到某个值后又回升，慢漫趋于一个稳定值； 3505撤掉外磁场，丁瞬时减小，接着缓慢回升，趋于一个稳定值。
The number of wavelength converters that the spn needs when the packet loss rate approaches to a fixed value , is less than that for the spl . then , we analyse the problem caused by unimproved distribution order of wavelength passages using faa ( first available algorithm ) that is a lrwcs ( limited - range wavelength converter ) distribution algorithm in optical packet switching and bring a minimum degree first ( mdf ) algorithm that firstly assign the wavelength passage with the fewest arriving packets 在相同的波长转换器数目(没有达到稳定值)的时候, spn结构的丢包率低于spl的丢包率,并且在接近稳定值时, spn结构所需要的波长转换器数目也小于spl结构所需要的波长转换器数目。分析了spn光分组交换节点中有限波长转换器分配faa算法由于未对波长通道分配次序进行优化所带来的问题,提出了到达分组数最少的输出波长通道优先进行调度的最小度优先的分配算法。
