The basic grammar structures were modeled by the basic compiler classes and the compiler front end architecture.

在抽取语言文法基本结构的基础上，构造了可复用的编译基本类。

youdao

The front end of the speed reduction crankshaft (1) and the tail end of the main shaft (3) are made by adopting the polygon structure and are same as the inner structures of the grooves (5) and (6).

减速机轴(1)前端与主轴(3)的末端均采用多边形结构构成，并且与凹槽(5)及凹槽(6)的内部构造相同。

youdao