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The features of high-reliability power converters, that can help to meet the added power-system design requirements to improve the reliability of the power systems are discussed. The advantages of distributed power systems with multiple dc-dc converters on each card which can be used to generate the low voltages very close to the load are also discussed. Some 相似文献
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Plant biotechnology in china 总被引：4，自引：0，他引：4
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Jian S 《Science (New York, N.Y.)》1985,229(4713):525-527
Reforms of the economic and research and development management systems are spreading far and wide in China in a planned manner. The creative and pragmatic spirit demonstrated by the Chinese government in these reforms has won enthusiastic support of the Chinese people and aroused keen interest of statesmen, economists, and scientists the world over. The four previously established special economic zones, the opening up of 14 coastal cities and Hainan Island to foreign investment, and the smooth settlement of the Hong Kong issue by means of "one country, two systems" have brought new splendor to China's reforms. Many people in the press regard the decision of "one country, two systems" as the most courageous and fascinating creation of the 20th century. 相似文献