isomorph

1.In silicate minerals and magnetites existed isomorph tin.

硅酸盐矿铁矿中都存在类质同象态锡。

2.High and low, the bilateral symmetry, the isomorph, the homochromy, the homogeneity symmetry is called the absolute symmetry;

下、左右对称，同形、同色、同质对称被称为绝对对称；

3.According to the concept of context process problem space,. the concept of Directed Assembly Relationship Graph(DARG) was put forward. The isomorph of DARG was defined.

根据下文工艺问题空间的概念,提出了有向装配关系图的概念,定义了有向装配关系图同,有向装配关系图零件通用属性来建实例库。