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The foundation of this system provides a good reference to promote the standardization and intelligence of the overhaul and maintenance of vacuum switches. This paper develops a special HF pulse power supply for internal pressure estimation, which achieves the output of HF-HV sinusoidal pulse wave whose frequency and amplitude can be modified respectively, and meets the design requirements according to the results of Simulink simulation and practical experiments. With the help of AT89S52, this paper designs an I~2C serial bus based signal detection system for peak value signal acquisition of HF pulse currents, which communicates with the upper computer by asynchronous serial communication for uploading the data. In the upper computer, a human computer interface is developed by Matlab software, whose functions are to do some computation and graphic display, such as calibrating the relation curve of vacuum degree and peak value of HF pulse currents, vacuum degree computation, and vacuum lifetime evaluation analysis basing on grey forecasting model as well as making relative suggestions.

本文研制了用于真空度检测的高频脉冲电源，通过Simulink仿真和试验检验其满足设计要求，实现了电压幅值和频率独立可调的正弦波高频高压脉冲输出；利用以AT89S52为核心基于I~2C串行总线的信号检测系统实现高频脉冲电流峰值信号的采集，通过异步串行通信实现单片机与计算机之间的数据通信，将检测数据传至上位机；在上位机利用Matlab开发人机交互界面，实现相关数据处理和图形显示，包括真空度——高频脉冲电流峰值关系曲线标定、真空度数值计算、基于灰色预测模型的真空寿命评估分析和提出相应决策建议。

" Creation of peak , aureole reflect " i peak enterprising spirit of chinese , we inherit long - term service customer , innovative policy of development , pursue customer ' s satisfied smile , create beautiful tomorrow constantly

"峰之创造，华美体现"是我峰华人的企业精神，我们将秉承长远服务客户，不断创新发展的方针，追求客户满意的微笑，共创美好的明天！

" Creation of peak, aureole reflect" I peak enterprising spirit of Chinese, we inherit long-term service customer, Innovative policy of development, pursue customers satisfied smile, create beautiful tomorrow constantly!

"峰之创造，华美体现"是我峰华人的企业精神，我们将秉承长远服务客户，不断创新发展的方针，追求客户满意的微笑，共创美好的明天！

While this rule is often used to backdate the ideal start of training in tennis, girls peak physically at around 17, so they ought to start by 7; boys peak later, so 9 is O.K.

虽然这个法则常被用来回顾确定一个理想的开始阶段在网球方面，女孩子的体力峰值在17岁，因此她们应该从7岁开始训练。

We also see that the annual peak load is 15GW . The base load has to be fed 100 percent of the time , but the peak load may occur for only 0.1 percent of the time .

我们还注意到，每年系统需求的平均最大值是15GW，而这已经需要百分之一百的时间去提供基本负荷了，但是高峰负荷只会出现0.1秒而已。

The purposes of this study were to explore noise distribution, its timing, and sources of peak noise in the neonatal intensive care unit of a University Hospital in Southern Taiwan. Two surveys on noise distribution and peak noise of the warmer bed were conducted.

本研究之目的为探讨南部某一所大学附设医院中新生儿加护病房噪音之分布情形及其与时间的关系，以及发生突发性高度噪音之频率和相关来源。

3Though the variety of the biotite content in granite is not very important to the influence of macroscopic peak strength of granite, from the microscopic view, a range still a demand attractor that it affect, the peak strength of granite is the highest when the biotite content is about 5%.

3花岗岩中云母含量的变化对花岗岩宏观峰值强度的影响虽然不是非常显著，但是，从细观角度考虑，其影响的幅度还是需要引起注意的，在云母含量在大约5%时，花岗岩的峰值强度最高。

The variation of the mechanical properties, including peak stress, Young's modulus and poisson ratio of Gypsum Breccia, was obvious. The peak stress and Young's modulus were improved after drying. The mechanical properties were obviously affected by the natural water content.

烘干后，岩石的力学性质发生了很大的变化，峰值强度、弹性模量都有很大的提高，岩石表现出脆性，岩石的天然含水率对烘干后的力学性质改变影响很大。

Bian Buchu is that this one was as of this Green Lotus Peak blooming beauty of Lijiang rhyme, or is it the Green Lotus Peak of Emptiness Lijiang alive.

一时间竟辨不出是这碧莲峰绽放了这漓江的美韵呢，还是这漓江活现了碧莲峰的空灵。

Four years later on Broad Peak, Hemann Buhl and his companions proved that, without any help from high altitude porters, a small team could climb an 8,000 metre peak.

四年后在布洛阿特峰，荷曼？布尔和他的同伴证明了，在没有任何高海拔挑夫的帮助下，一支小队伍也能够攀登8，000米级的高峰的。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。