英语语法分析

The paper considers the plane elastic problems of dodecagonal system in two dimensional quasicrystals.

研究了十二次对称二维准晶的平面弹性问题。

Half hexagonal, octagonal or dodecagonal sections can be added to the end bay of any "a" framed structure.

半六角形，八角形或十二次部分可以添加到任何“一个”框架结构的末尾湾。

This system is normally used for hexagonal, octagonal and dodecagonal structures but is also available for all "a" frame standard structures.

该系统通常用于六角形，八角形和十二次结构，而且也是为所有的“A”标准的结构框架可用。