| 1. | Reference sources for the calibration of surface contamination monitors - beta - emitters and alpha - emitters
用于校准表面污染监测仪的参考源发射体和发射体 |
| 2. | Dds is used to achieve fine resolution , while injection phase lock circuit is used to realize low phase noise high performance input reference frequency
Dds用于实现小步进,而注入锁相电路则用来产生低相噪的高性能参考源。 |
| 3. | A good reference puts out a fixed voltage under varying conditions , and you can get versions that put out any of several standard voltages
一个好的参考源可以在外部变化的条件下给出固定的电压参考，你可以使用发表过的任何标准电压源的版本。 |
| 4. | Reference sources for the calibration of surface contamination monitors part 2 : electrons of energy less than 0 . 15mev and photons of energy less than 1 . 5mev
用于校准表面污染监测仪的参考源第二部分:能量低于0 . 15mev的电子和能量低于1 . 5mev的光子 |
| 5. | The scenarios that clearly embed rationales for solutions become valuable reference sources of use context information throughout the design process
贯穿于整个设计过程中，这个明显嵌入解决方案的基本原理的典型场景，变成用户上下文信息很有价值的参考源。 |
| 6. | Technical standards , behavior norms , inquiry limitations , reference specialists , the use of reference sources , the quality of answers , mode of responses , and time limit are discussed
论文从技术标准、行为规范、问题限定、咨询专家、参考源的使用、答案的质量、答复方式、答复时限等方面进行了阐述。 |
| 7. | The current source plays an important part in the performance of the oscillator . with the help of the voltage reference , we design a constant current source which does not vary with the temperature 、 the voltage source and the process
由于充放电电流对弛张振荡器的性能有很大的影响,因此本文把基准电压源结合在一起设计出一个受温度、电源电压、工艺条件影响很小的基准电流参考源。 |
| 8. | The article analyzed work characteristic of modem reference consultation , the existence question and the digitized development direction , discussed the digital reference source organization method as well as the digitized reference consultation service and innovation
摘要文章分析了现代参考咨询工作的特点、存在的问题及数字化发展方向，探讨了数字型参考源的组织方法以及数字化参考咨询的服务与创新。 |
| 9. | The fundamental unit of the high - reliability frequency source is low phase noise reference source , and the sources with optimum frequency stability of reference sources are high reliable crystal oscillator and atomic clock . even the atomic clock itself needs high reliable crystal oscillator
而高稳定的频率源又是以低相噪参考源为基础的，在各种参考源中频率稳定度最好的是高稳定晶体振荡器和原子钟，而原子钟本身也要用到高稳定晶体振荡器。 |
| 10. | At the same time , the technology of frequency synthesis is developing rapidly and it requires much better performance on its reference source - crystal oscillator . so , it is significant for practical applications and development of theory to make researches on crystal oscillator ' s phase noise and phase jitter , and improve its performance fundamentally
同时随着频率合成技术的迅猛发展,对晶体振荡器参考源的要求也越来越高,研究频率源信号的相位抖动和相位噪声,从根本上改善频率源的性能,对于这一学科的理论发展和实际应用都具有重要的意义。 |
