| 1. | In a radio tube there is a source of electrons .
在电子管中，有一个电子发射源。 |
| 2. | The combination of very large radio flux and exceedingly small angular size means that the sources have a fantastic surface brightness .
极大的射电流量同极小的角经集于一身，意味着这些发射源有难以置信的高表面亮度。 |
| 3. | The distance between the acoustic-emission source and the receiving transducer, and the background noise level are primary factors in selecting a particular frequency band .
声发射源与接收讯号传感器间的距离以及环境噪声的电平是选择频带的主要依据。 |
| 4. | Acoustic emission source location and analysis system
声发射源定位及分析系统 |
| 5. | Acoustic emission source location system
声发射源定位系统 |
| 6. | Firstly time - domain radiation mechanism of emanation sources is studied
第一部分研究了泄漏发射源的时域辐射机理。 |
| 7. | Ultraviolet - emitting source
紫外线发射源 |
| 8. | Acoustic emission source
声发射源 |
| 9. | Non destructive testing . recommanded practices for the localizing of acoustic emission sources
无损检验.声发射源的定位推荐实施规程 |
| 10. | The idea would be to install a source in each room of an office building , factory or home , giving wireless power throughout
他的想法是在每幢办公大楼、工厂或居民住宅的每个房间里安装发射源，将无线传电应用普及开来。 |
