Because disrelation is the importment aim of the sofeware structure , researching it has great significance 无关性作为体系结构最终目的，研究它无疑是很有意义的。
2.
At last conclusions and advices are presented the research and realization of the disrelation in view logistic and data create a kind of new development mode of sofeware system with three tiers structure 三层体系结构无关性的研究及实现开创了一种新的三体体系结构软件系统的开发模式，特别是对采用j2ee架构的系统有一定的参考价值。
3.
Two hundred and seventy - four sites were detected by 15 10 - mer primers , out of which 262 were polymorphic ( 95 . 6 % of the total loci detected ) . all of the materials were clearly distinguished , of which fourteen samples have forty - five typical rapd bands . before the molecular taxonomy was introduced , people never doubted subgenus yulania ' s disrelation with subgenus magnolia and a close relation between subgenus yulania and michelia , as there is in both genera a sameness seen in their prolepsis and powder chambers dehiscing on the side 3 、通过对玉兰亚属rapd扩增谱带的分析，发现该类群具有很高的多态性：多态位点百分率高达95 . 6 ，产生的多态性带数与所用引物数的比例为17 . 6 ， 15条随机引物清楚地分开了31个种类，其中的14个种共有45条特征性带，在利用rapd标记已研究过的类群中，本类群多态性较高。
