| 1. | Measurement of power - frequency electric fields
工频电场测定 |
| 2. | Design and research of power - frequency electromagnetic fields measurer
工频电磁场测量仪的设计与研究 |
| 3. | Test of power - frequency withstand voltag
工频耐压试验 |
| 4. | U - - the rated power - frequency voltage between conductors , for which the cable designed
U一电缆设计用的导体间的额定工频电压； |
| 5. | Power - frequency electric field of ehv transmission lines under condition of complex landscape
复杂地势下超高压输电线路的工频电场 |
| 6. | U0 - - the rated power - frequency voltage between conductor and earth or metallic screen , for which the cable designed
Uo一电缆设计用的导体对地或金属屏蔽之间的额定工频电压； |
| 7. | The product is suitable for use in power distribution lines or fixed installation with rated power - frequency voltage up to and including 450 / 750v
本产品适用于工频额定电压450 / 750v及以下配电网或建筑固定敷设之用。 |
| 8. | The product is suitable for use in power distribution lines or fixed insta - llations with rated power - frequency voltage up to and including 0 . 6 / 1kv
本产品适用于工频额定电压0 . 6 / 1kv及以下配电网或工业装置中固定敷设之用。 |
| 9. | Because quasi - fermi levels of a laser diode ( ld ) vary with the carrier density , it is predicted that a new type of hysteresis loop should occur for the current passing ld while a hysteresis loop appears on the power - frequency curve of the ecld . an explicit analytical expression for the frequency width of the hysteresis loop and the condition for the formation of the hysreresis loop has been deduced
预测了由于半导体激光二极管( ld )的准费米能级之差随ld内线流子密度的变化而变化，因而，在调谐外腔半导体激光器的输出功率?振荡频率曲线上出现双稳环的时候，通过ld的电流也应出现一个伴随的新型双稳环? ?电流双稳环。 |
| 10. | This text introduces the characteristic concept of turbine control system from two traditional aspects of static and dynamic state , and the characteristics of reheating system and the power - frequency electric liquid control system , and analyzes the difference from the simulated electric control system to digital electric system . this text describes the constitute of deh system from three aspects and analyzes the reliability of deh system
本文从传统的汽轮机静态特性和动态特性两个方面讲述了汽轮机调节特性的概念，以及中间再热式汽轮机调节特性、功率? ?频率电液调节系统的特点。以阳泉二电厂deh系统为例，从硬件、软件和控制功能群三部分叙述分析了deh的组成和各部分作用，并对deh系统的可靠性进行了分析。 |
