sewer inspection and assessment

• 管道检测

sewer inspection and assessment的用法和样例：

例句

1. In order to inspect the pipeline position and quantitate the pipeline settling depth, the single-beam echo sounding technique is used in submarine pipeline inspection.
   摘要为查明海底管道的位置和掩埋状态，在海底管道检测中使用了单波束测深技术。