extraction duct造句

例句与造句

1. Fire resistance tests for service installations - smoke extraction ducts
   辅助设施的防火检验.排烟管
2. Fire resistance tests for service installations - part 8 : smoke extraction ducts
   服务设施的防火试验.第8部分:排烟孔管道
3. Exhaust extraction duct
   排气抽气管
4. Fire resistance tests for service installations - part 8 : smoke extraction ducts ; german version en 1366 - 8 : 2004
   服务设施的防火检验.第8部分:排烟管道
5. It's difficult to find extraction duct in a sentence. 用extraction duct造句挺难的