ballast block
常见例句
- Next was an experimental study on modification of stone ballast concrete small hollow block.
最后进行石渣砌块填充墙（模拟）的改性试验研究。 - After all, there came an experimental study on modification of wall filled with stone ballast block.
经过近两年的研究，石渣砌块改性初见成效。 - The design concept, weight calculation and the method of installation of the ballast block are described and introduced.
本文介绍了压块基本概念、压块设计和压装等几个问题。 返回 ballast block