drainage works的用法和樣例：
例句
- Preliminary approach to environmental risk assessment of drainage projects during ollfield exploitation in Dnqing.
大慶地區油田開發排水工程環境風險評價初探。 - Architecture electrotechnician is a basic important technical technical course for the undergraduates majoring in water supply and drainage system.
建築電工是給水排水工程專業的一門實踐性較強的專業基礎課。
