In silicate minerals and magnetites existed isomorph tin.
硅酸盐矿物和磁铁矿中都存在类质
象态锡。
晶体；构，形In silicate minerals and magnetites existed isomorph tin.
硅酸盐矿物和磁铁矿中都存在类质象态锡。
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
文工艺问题空间的概念,提出了有向
配关
的概念,定义了有向配关构,以有向配关和零件通用属性来构建实例库。
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