This design instruction booklet first introduced the plate tower principle of work and the unique feature.

本次设计说明书首先介绍了板式塔的工作原理及结构特点。

youdao

This design instruction booklet first introduced the plate tower principle of work and the unique feature.

本次设计说明书首先介绍了板式塔的工作原理及结构特点。

youdao