In case of smaller schema (determined based on the computation of total number of classes, attributes, and so on), the initialization code is generated within the Package class itself.
在较小的schema情况下(取决于类、属性等的总数的估计)，该初始化代码在包类本身中生成。
2
To generate the velocity schema curve of optimization operation for train, a computation model combined local optimization with global optimization is proposed.