共查询到20条相似文献,搜索用时 156 毫秒
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几年前,当LG帝雅斯对开门冰箱的广告铺满街头时,人们的感觉更多是怀疑.许多人觉得,这种容积超过500L的对开门大冰箱,相当长一段时间难以在中国打开市场.那时,市场上常见的LG、GE、三星等品牌的对开门冰箱都是进口的. 相似文献
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AK2000智能型低压开关柜吸收了美国GE公司最新的电能保护、控制和通信技术,具有技术性能高、安全可靠、应用方便和智能化程度高等特点。本文重点介绍该产品的主要技术参数和结构特点。 相似文献
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GE公司生产的 6 6 0MW机组 ,结构有许多独特之处 ,本文简单介绍汽轮机结构方面的一些特点 ,并对启动方式进行了探讨 ,如旁路系统的控制 ,运行方式的调整等。 相似文献
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本文简述了一种新型冰箱门体发泡线,由于该线具备结构紧凑、操作简单、传动平稳、安全可靠及生产效率高等特点,广泛应用于冰箱(柜)门体的批量发泡生产。 相似文献
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One of the main objectives of power system restructuring and deregulation is to allow customers to select their desired reliability. This paper proposes a new market model where the reserve capacity is scheduled based on the desired risk level of customers, that is recognized by the expected load not supplied (ELNS) index. The reliability constraint in the objective function of reserve procurement is formulated as a function of generation and reserve allocation among the generating units as well as their failure probability. The reserve requirement is determined regarding transmission constraints and load curtailments due to transmission congestion. Therefore, this method produces market-clearing results with the desired probabilistic characteristics. Moreover, it is shown that the load shedding procedure in contingency states affects the assessment of reserve. The Roy Billinton test system (RBTS) and the IEEE reliability test system (RTS) are analyzed to illustrate the technique. 相似文献
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《Education, IEEE Transactions on》1976,19(4):139-142
In September 1974, the Polytechnic Institute of New York (formerly the Polytechnic Institute of Brooklyn) offered undergraduate degree programs for the first time at its Long Island campus in Aerospace, Civil, Electrical, and Mechanical Engineering. This paper describes the Freshman General Engineering Lab, GE 103, the first in a sequence of new undergraduate engineering laboratories that has been developed to support these new programs. GE 103 is a two-credit, four hours per week, laboratory required for all Freshman during their second semester. The course is designed with a three-fold purpose: 1) acquaint the incoming students with representative experiments and instrumentation in the various aforementioned engineering disciplines, 2) include experiments which illustrate, where possible, the application of theory taught in the first year physics lectures, and 3) coordinate the freshman computer course with this laboratory so that assigned computer problems are related to experiments performed. With these objectives in mind, GE 103 has been designed to function as an introductory engineering-physics laboratory. In this paper we describe how we implemented these goals and report the students' reactions to the course. 相似文献