double wall piping system造句

例句与造句

1. Numerous jet fuel monitoring facilities for buried double wall pipe systems dating from the late 1980 ’ s to the present
   从80年代末到现在，我们给无数的军用机场燃料监控系统埋设双重地下管网系统。
2. It's difficult to find double wall piping system in a sentence. 用double wall piping system造句挺难的