英语语法分析

Objective To investigate the effect of ESWL treatment for urolith.

目的探讨ESWL 治疗泌尿系结石的效果。

The results showed that the chemical compositions of the 3 cases were calcium phosphate, struvite and mixed urolith respec.

结果表明，3例结石的化学成分分别为磷酸钙、磷酸铵镁和混合性结石。