| 1. | Methods of testing for rating ducted air terminal units
评定管道式空气终端装置的测试方法 |
| 2. | The train is propelled by ducted fans
这种火车用涡扇推进器。 |
| 3. | Study of the unchoked ducted rocket engine and fuel - rich propellant
非壅塞固体火箭冲压发动机及其贫氧推进剂 |
| 4. | Ducted heat recovery ventilators
管道热回收通风机 |
| 5. | Non - ducted air conditioners and heat pumps - testing and rating for performance
非管道式空调和热泵.性能试验和评定 |
| 6. | Ducted air - conditioners and air - to - air heat pumps - testing and rating for performance
管道通风空调和空气对空气热泵.性能的试验和额定值 |
| 7. | Acoustics - measurement of insertion loss of ducted silencers without flow - laboratory survey method
声学.无气流管道消声器插入的损耗测量.实验室调查法 |
| 8. | Acoustics - measurement of insertion loss of ducted silencers without flow - laboratory survey method
声学管道消声器无气流状态下插入损失测量实验室简易法 |
| 9. | Acoustics . measurement of insertion loss of ducted silencers without flow . laboratory survey method
声学.无流量导管消音器插入损耗率的测量.试验室调研法 |
| 10. | It is a key technique for ducted rocket to make the second combustor operate at high efficiency and stability
实现补燃室高效率、稳定、可靠的工作，是固体火箭冲压发动机的关键技术问题。 |
