duct system
短语词组
- Implanted duct -reservoir system 植入式导管药盒系统
- double duct air -conditioning system 双风道空调系统
- dual duct air -conditioning system 双通道空调系统
- twin -duct ventilation system 双管道通风系统
- dual -duct air conditioning system 双风管空调系统
- non -duct inducement ventilation system 无风管诱导通风系统
- high -velocity duct system 高速风道系统
- duct system permissible leak -age rate 系统风管允许漏风量 返回 duct system