管路的安装、完整性和密性已经检验过了，这是报告单。

The installation completeness and tightness of the piping have been inspected already. Here's the survey report.

youdao

管路的安装、完整性和密性已经检验过了，这是报告单。

The installation completeness and tightness of the piping have been inspected already. Here's the survey report.

youdao