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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。

In his clothing store on the wall to do some graffiti art, good feeling!

在他的服装店的墙上做一些涂鸦艺术，感觉很好！

You may well find that once this period of cogitation is over, you decide that you will indeed proceed ahead as you had originally planned, however, if you do some thinking about it all now, then when it comes to making your final, definitive decision, you'll feel all the more convinces that it's a good move.

一旦这个沉思的阶段过去，你将欣喜地发现，你决定照原先计划的那样确确实实地向前进。然而，如果你现在多考虑一些，在做最终决定的时候，你将感到有更多的证据让你确信这的确是个好的动作。

I think it would be a good idea to do some cycling on Sunday.

我想在周日的时候去骑自行车将是一个不错的主意。

I think it would be a good idea to do some cycling on Sun day.

我想在周日的时候去骑自行车将是一个不错的主意。

I think it would be a good idea to do some cycling on

我想在周日的时候去骑自行车将是一个不错的主意。

I think it would be a good idea to do some cycling on Sunday. www.enlearn.cn

我想在周日的时候去骑自行车将是一个不错的主意。

I think it would be a good idea to do some cycling onSunday.

我想在周日的时候去骑自行车将是一个不错的主意。

To be a good negotiatior, you have to do some reaserch before you come to a dealership.

记住，你的出价应该在合理的范围之内。

Now,the Cleaner Production Audition is a kind of test system ,made some Enterprises in order to pass the test,do some apparent work,result in the Cleaner Production Audition,s is not good.this article present the method of Cleaner Production Audition basing on the The waste Minimisation Club,the core of which is through an organization attain to the share of measure,approach, information and experience,in comparison with the traditional Cleaner Production Audition,this kind of method check by itself, indicate that the Enterprises really understand which Cleaner Production is the need of persistence,applying to the rizhao eco-industry park,the result show that receive the better economical and environmental benefit.

现状清洁生产审核基于一种考核制度，致使有些企业&为通过审核而审核&，扭曲了清洁生产的意义和真正目的，导致清洁生产审核实施效果不佳。本文提出废物最小化俱乐部模式下的清洁生产审核方法，核心是通过废物最小化俱乐部达到行业清洁生产手段，方法，途径的共享，与传统清洁生产审核的区别是企业自发的，自身进行内部清洁生产审核，表明企业真正理解了开展清洁生产是企业自身存在和发展的需要，将该方法应用于日照生态工业园区实践，结果表明，经过清洁生产审核后的企业收到了明显的经济和环境效益。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。