英语语法分析

Analysis of risk factors for nosocomial infection of urological surgical department.

泌尿外科医院感染危险因素分析。

Objective: to summarize the early experience of transperitoneal laparoscopic urological surgery.

目的：总结经腹腔途径泌尿外科腹腔镜手术的初期经验。

The traditional ureteral stent had been widely used in urological surgery since it was first developed in 1967.

非降解性输尿管内支架管自1967年问世以来，广泛应用于常规的上尿路手术。