The two basic modes of mathematical model-behavior mode and state variable mode, along with the isomorphic and homomorphic relation between models and real system are described.

系统数学模型的基本模式：行为模式和状态变量模式以及在状态变量模式下的同构与同态系统；

youdao

The representation theorem stating that every relational system of stacks is isomorphic to a system of finite sequences of elements is proved.

这一公理说明每个栈的关系与有限元素序列系统是同构的。关键词栈；算法?。

youdao

Mimetite group minerals are a group of isomorphic series minerals with hexagonal system, which include mimetite, vanadinite and pyromorphite.

砷铅矿族矿物是一族六方晶系的类质同象系列矿物，包括砷铅矿、钒铅矿和磷氯铅矿。

youdao