ccn是什么意思

ccn中文什么意思

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ccn chakcharan: 恰赫恰兰
ccn communication control number: 通信控制器编号
ccn cross connect network: 交叉连接的网络
ccmwe: 欧洲外籍工人基督教委员会
ccmt: 儿苯酚甲基转移酶

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Using the algorithm ccn ( calculate crossing number ) , this article researches on the relation between the crossing number and girth of the 3 - regular graphs
利用计算交叉数的算法ccn ( calculatecrossingnumber ) ，本文对三正则图的交叉数与围长的关系进行了深入的研究。
In this article , a algorithm ccn ( calculate crossing number ) is put forward to study the crossing number . it is a very important development in graph planarity issue after planarity - determinant algorithm and embedding algorithm
本文首次给出了较好的计算图的交叉数算法ccn ( calculatecrossingnumber ) ，这是继图平面性判定算法，二连通图的平面嵌入算法之后在图的平面性问题上的一个最重要的进展。
By the algorithm ccn , we investigate the crossing numbers of regular graphs with small order . we get the crossing numbers of 3 - regular graphs for n < 16 and 4 - regular graphs for n < 12 , and the lower bounds of the maximum crossing numbers of 3 - regular graphs for n < 30 and 4 - regular graphs for n < 19 , where n is the order of graphs . according to the result , we put forward the conjecture about the maximum crossing numbers of regular graphs
本文还利用算法ccn ( calculatecrossingnumber )对顶点数较小的正则图的交叉数进行研究，计算出n 16的三正则图和n 12的四正则图的交叉数，以及n 30的三正则图和n 19的四正则图的最大交叉数的下限( n为图的顶点个数) ，根据计算结果提出关于正则图最大交叉数的猜想。
The influence of the cloud droplet spectrum character and the spectrum growth and change is considered , which does not use a cut - off value for conversion from cloud water into rain water process . in the continuous coalescence equation , the particles fall velocity difference is not moved out from the integral , but is integrated in the equation as the function of diameter d to avoid the error of using particles average fall velocity . in the new scheme , generation rate of graupel due to the collection of snow by graupel and the collection of cloud ice by graupel are included
云中凝结核ccn的数浓度采用超几何函数表示；云水向雨水的自动转换过程采用grabowski ( 1999 )的公式，考虑了云滴谱的特征和发展变化对该过程的影响，而不是采用原方案给定阈值的方法描述该过程；对连续碰并方程不再将粒子落速差作为常量提出积分号外，而是直接作为粒子直径函数在积分号内求解，这样处理可以回避使用粒子群的平均落速带来的误差；增加了霰和雪、霰和冰晶的碰并微物理过程。