The class library extension and edition upgrade problems are solved by providing a kind of homology mechanism.

采用同源类链式继承机制，解决类库的扩展及版本升级问题；

youdao

The class library extension and edition upgrade problems are solved by providing a kind of homology mechanism.

采用同源类链式继承机制，解决类库的扩展及版本升级问题；

youdao