新型引线热浸镀锡合金的研究

分析比较了进口锡与国产锡的成分和性能。设计出了新型的引线热浸镀锡合金，它具有较低的工作温度、优良的抗氧化性、流动性和可焊性。     

调节对象参数和运动特性随工况变化的分析

水轮机调节对象的许多参数都是随运行工况变化的。以调节对象线性化模型为基础，从1个实例计算人手，计算了不同工况下水轮机传递系数和发电机6个参数的变化情况，进而计算这些参数变化对捌节对象特征根的影响。通过汁算表明，其水力振荡衰减速度与出力有关．而系统的其他运动特性随工况变化较小。     

Sales and Use Taxation in E-Commerce: Where We Are and What Needs to be Done

As sales through the Internet have increased, states have sought to force remote sellers to collect and remit sales/use taxes. In response to the U.S. Supreme Court's Constitutional obstacles, the Streamlined Sales Tax Project (SSTP) was organized in 2000. SSTP is a voluntary effort by a number of states to address the Constitutional problems and reduce the burden of sales tax administration for all sellers in all types of commerce. This article examines the current state of the law and the major problems surrounding the SSTP.     

计算机辅助技术在水轮机调节中的应用

将计算机辅助系统中的ＣＡＡ、ＣＡＤ、ＣＡＭ及ＣＡＴ等技术移植到水轮机调节系统中，以求在水轮机调节系统中建立一套科学的工程设计方法     

How to make and defend a proposal in a deliberation dialogue

In this paper it is shown how tools developed in argumentation theory and artificial intelligence can be applied to the development of a new dialectical analysis of the speech act of making a proposal in a deliberation dialogue. These tools are developed, modified and used to formulate dialogue pre-conditions, defining conditions and post-conditions for the speech act of making a proposal in a deliberation dialogue. The defining conditions set out what is required for a move in a dialogue to count as the making of a proposal by one of the parties. What is required are the conditions that (1) the move fit the requirements of the argumentation scheme for practical reasoning, and (2) the premises are propositions describing common goals of both parties or propositions that they reasonably consider means to achieve these goals. The analysis goes beyond the standard speech act approach by specifying not only the normative requirements for making a well-formed proposal, but also the requirements for responding to it by questioning or criticizing it, and the requirements for defending it.     

MRIL-Prime核磁共振测井仪

MRIL -Prime是Halliburton公司推出的最新一代的核磁共振测井仪器。该仪器吸收了CMR和MRIL -C型仪器的优点 ,改进了其不足 ,采用 5个频带 9个不同的频率 ,一次下井可进行多种模式的测量 ,同时获得标准T2谱、移谱、差谱等信号 ,既提高了测井速度 ,又获得了更多的测井信息 ,同时数据精度也大大提高。文章介绍了该仪器的结构、主要技术指标、电子线路、电容和探头特征、工作原理及实现方法     

电子商务对企业集团营销手段的影响

介绍了电子商务，以及目前电子商务的发展趋势及对社会的影响，特别阐述了蓬勃发展的电子商务对企业集团的经营环境与手段的影响。     

变角度电子秤在单斗轮取料机上的应用

本文介绍了通过在单斗轮取料机上应用变角度电子秤，实现了一个圆盘准确配加两种以上的原料，避免了原来配加量无法准确控制的问题，提高了配料准确率，混匀料质量明显提高，为降低配矿成本措施的实施提供了技术支持.     

电子式互感器在数字化变电站的应用

电子式互感器和合并单元作为数字化变电站的重要组成部分，与传统互感器相比具有绝缘简单、动态范围宽、抗饱和性能强、占地面积小、实现数据输出等优点。文中介绍了有源和无源电子式互感器的构成，对这2种方式进行了比较，介绍了合并单元的功能及其应用，对工程应用提出了互感器配置和功能应用的实施建议。     

从含有机物的金废料中提取纯金的研究

物料的经蒸发、燃烧和焙烧除去有机物。焙渣用硝酸浸出可溶性杂质，金富集在渣中。用正水溶解金。金溶液用Ｈ２ＳＯ４和ＮａＯＨ进行纯化处理，用亚硫酸钠沉积金。金粉洗至无Ｃｌ＾－反应后，加稀硝酸煮沸３０￣６０ｍｉｎ，得到纯度９９．９５％以上的海锦金。