pipe net的用法和样例：
例句
- The automation of making water in waterworks and the pressure management system of civil pipe networks.
自来水厂制水自动化及城市管网压力管理系统。 - Current and Yueyang Ming dynasty courtyard companies engaged in natural gas pipe network construction projects.
目前与岳阳大明公司合作从事天然气庭院管网建设工程。
