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1·The clustered groups of AMF DNA by AFLP marker from the roots of different cultivars of P. mume were not equal to cultivar groups.

根据AFLP标记结果聚类，梅品种根系内amf基因组dna的聚类类别与梅品种的“品种群”这一分类级别无相关关系。

2·This paper presents a basic law of the simplified equation of surface of degree 2, especially the law of the simplified equation of surface of degree 2 with two equal zero roots.

给出一种简便的二次曲面简化方程的基本定理，特别给出二重零特征根二次曲面简化方程的定理。

3·Aiming at solving those problems, this paper proposes a new method of dealing differently with similar to and equal to relations in grass-roots ontology alignment.

为了解决这些问题，本文提出了一种新的“类似”和“平等”的关系在基层本体对准不同的处理方法。