Found in 1995 , jinyuan has developed a wide range of power supply products : tching power supply , linear power supply , battery charger , mobile phone charger , transformer and electricity meter counter etc 金元成立于1995年，现在已经开发出了大范围的电源产品：开关电源、线性电源、蓄电池充电器、移动电话充电器、变压器和电测量器等。
Found in 1995 , jinyuan has developed a wide range of power supply products : switching power supply , linear power supply , battery charger , mobile phone charger , transformer and electricity meter counter etc 金元成立于1995年，现在已经开发出了大范围的电源产品：开关电源、线性电源、蓄电池充电器、移动电话充电器、变压器和电测量器等。
Auto chain makers , high - frequency thermal processing devices , gas carbonnitriding furnaces , cn lathes , nc ball lathes , cnc hobbing machines , nc milling machines , amsler universal testers , three - dimensional measuring instruments , hardness testers 自动制锁机，高频率热处理装置，气体渗碳氮化炉， cnc车床， nc轴承车床， cnc滚铣刀床， nc铣刀床，伸缩臂型万能试验机，三维测量器，硬度试验机
The precise measurement of thermodynamic temperatures , for example with a gas thermometer , is very difficult . practical temperature scales were therefore introduced to make use of instruments such as platinum resistance thermometers which are much easier to use and give much higher precision measurements 要准确测量热力学温度(如使用气体温度计来进行测量)是十分困难的，因此利用铂电阻温度计等作测量器的实用温标便被采用，令使用更为容易及测量更为精确。
From this , the room is very important to voice . combine of can make comprehensive develop primarily is a " building " . room although more big more good , however , buy the empress class getting to output the power to with the market . the " space physical volume " should can t exceed 2 10000 cubic foot . and this physical volume of high , deep , the breadth is too good enough to use what device the reruns is several can disorderly true 音波并不是我们可以从测量器显像屏的一种平面波形。而且从声源物体单元以最大角度向四面八方作约半球形扩散。以书本理论而言，一个10尺高16尺阔26尺长的房间就可以有27 . 7尺的对角长度，也可以听到21至22周的超低频了。
This thesis firstly analyzed the significance of the research of the network flow monitoring , and carefully researches the mode of real - time network flow measurement . basing on those studies , this thesis summarizes three key problems : high - speed network packet capture technology 、 packet filter technology and multidimensional packet classification algorithm respectively . after that , the thesis focuses on the solutions to the three problems 本文首先分析了从事网络流量监测研究的现实意义,并仔细研究了rtfm实时网络流量测量模型,在此基础上,归结出了实现一个高性能的测量器将遇到的三个关键问题,即高速报文捕获技术、报文过滤器实现技术和多维报文分类算法。
