isomorph

In silicate minerals and magnetites existed isomorph tin.

硅酸盐磁铁中都存在类质同象态锡。

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；

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,提出了有装配关系图的概念,定义了有装配关系图同构,有装配关系图零件通用属性来构建实例库。