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This paper introduces the method of communication between PLC and drives base on PROFIBUS, by net configure, parameter set and program the system achieved data transmit and auto control.

摘要 本文介绍了以PROFIBUS现场总线为基础，通过网络配置、参数设定、软件编程来实现西门子PLC和其传动变频器之间的数据传送的通讯技术，完成传动装置的自动控制。

The teaching term took sixteen periods. The curriculum contained two topics,"acid and base", and "Taiwan's climate". Experimental treatments were teaching method. The research tools utilized in the study were " Science Concept Comprehension Test, Science-related Attitudes Scale, Problem Solving Ability Test and Questionnaire on the Attitude toward Science Teaching". A pretest administered before the experimental treatment and a posttest was held after the treatment. The data of SCCT, SRAS, and PSAT collected from pretest and posttest were analyzed by two-way ANOVA. Responses from the QAST were analyzed by ANOVA.

本研究的实验处理为以问题为中心的合作学习教学，研究工具包括「科学概念理解问卷」、「科学相关态度量表」、「问题解决测验」、「对自然科的教学态度问卷」、「教学检核量表」及「问题中心教学自我评估量表」，分析「科学概念理解问卷」、「科学相关态度量表」和「问题解决测验」资料时，以前测经验和教学法为自变项，后测为依变项，进行二因子变异数分析；「对自然科的教学态度问卷」采用单因子变异数分析；「教学检核量表」及「问题中心教学自我评估量表」则用来检核研究者的教学是否符合研究者的研究设计；在质性资料的部分，则分析学生的上课纪录、教师教学反省纪录及对自然科教学的态度问卷的理由。

First, in order to verify the correct of this retrieval month, by using the data of three-dimensional wind field, raininess field and temperature field that are output by MM5 numerical simulation, we climate the radial velocity field and echo intention field in the in-phase observation area of Dual-Doppler radar, then, on the base of the upwards retrieval theory and using the radial velocity field and echo intention field in the in-phase observation area of Dual-Doppler radar, we retrieve the atmospheric three-dimensional wind field.

首先，为检验此种反演方法的可靠性，我们使用MM5数值模式输出的三维风场、雨强场、温度场等数据，分别模拟生成两部雷达同步观测区的径向速度场和回波强度场，然后根据以上的反演理论利用模拟的双多普勒天气雷达观测到的径向速度场和回波强度场反演出大气三维风场。

Base on these fitting distributions, the baseband channel emulator provides a convenient method for system testing, which imposes residuary bit errors pattern on data stream reasonably.

在此基础上完成的卫星基带信道硬件模拟器能够为通信协议的测试提供方便、可信的信道基带特性模拟。

Long Range Ultra Short Base Line Position System is an underwater acoustic position system, which realize position, track and data communication to five underwater cooperative targets. USBL woks at responsion mode.

长程超短基线定位系统是利用水声定位技术实现对多个水下合作目标进行定位、跟踪和数据传输，系统工作于应答工作方式。

The data is from the sample investigation to agricultural chemical retail shops of Anqiu, Shandong Province-an important vegetables export base of our country, by teachers and students from SARD of Renmin University.

本文的数据来自中国人民大学农业与农村发展学院师生对我国重要蔬菜出口基地——山东省安丘市农药零售店进行的抽样调查。

Secondly, projectile flow and interaction flow field between base jet and flow around body are firstly calculated by higher-order implicit TVD algorithm finite volume in china, and are compared with experiment data and shadowgraph, and are found to be in good agreement.

其次，利用我们建立的高阶有限体积隐式TVD格式，在国内首次较详细地求解了旋成体弹丸及其绕流与射流相互干扰的湍流流场，同相应的实验数据及其流场纹阴照片进行了对比，表明计算结果准确反应了实际流场性质。

It was indicated by the CALPHAD that the solute content at the end point of primary solidification changes synchronistically with the start point, solute content in dendritic arm and the partition coefficient increase with the solid fraction. Simple Scheil equation was shown to be able to calculate the eutectic amount on the base of partition coefficient calculated by thermodynamics, its prediction for the different solutes is self--consistent and agreeable with the CALPHAD. The eutectic amount and SDAS was measured in DC experiment and compared to model value, it was shown that the experimental data are in agreement with the model prediction.

相图计算耦合Scheil模型的计算结果显示， Al--Cu--Zn合金单相凝固结束点的溶质含量与凝固初始点的成分同步变化，溶质含量和溶质分凝系数随凝固过程的进行不断增加；在热力学计算出合金分凝系数的基础上，简单Scheil方程可以计算初生相含量，从不同溶质得到的计算结果是自洽的，并与相图计算耦合Scheil模型的预测值一致；实验测定了不同成分铝合金的共晶含量和枝晶间距，实验数据与模型结果基本一致。

This pulse also helps "train" the base-band coupling capacitor in the ASH radio for best data slicer noise rejection.

这也有助于脉搏"一条龙"在灰无线电基带耦合电容器最佳的数据限幅器的噪声抑制。

And the superior decision-making is selected which base on completely check and the staidness investigate and make the best of the data to calculate and scientific calculation .the second aspect analyses the investment of stock cerificate: the purpose that enterprise invests long-term stock certificate is obtain the certain investment income by making use of the idle funds .in the long-term stock certificate, investor the appearance of option is another revolution in decision-making..

第二方面从证券投资进行分析：企业进行长期证券投资的目的是为了利用闲置资金来获取一定的投资收益。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新