下水道“生病”也可做胃镜,你听说过吗?下面就跟随记者来一探究竟吧。排水管道内积了多少泥?有没有发生破裂、错位?一直以来,由于排水管道是地下空间设施,传统的人工检查方式难以全面了解其内部状况,有些管道即使有缺陷也要等到完全堵塞 Sewer “sick ” can also be gastroscope, have you ever heard? Here to follow reporters to find out after all. Drainage pipeline has been built up how much mud? Are there any rupture, dislocation? Since the drainage pipe is underground space facilities, the traditional manual inspection method is difficult to fully understand the internal conditions, and some even have defects in the pipeline to be completely blocked