The parallel-connection and variable-speed operation characters of the centrifugal pump groups are studied by conics fitting of the character curves in the high efficiency area.

通过对离心式水泵高效工作区的性能曲线进行二次拟合，分析了离心式水泵机组并联调速运行特性。

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How to increase the efficiency, usability and convenience of clusters is a task in high performance computing area.

如何提高集群系统的运行效率、可用性和易用性是集群计算领域的一个重要的课题。

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High heat conducting efficiency: the diameter-altered cooling end is able to increase the heat loss area and heat conducting efficiency.

传热效率高。变径后的冷凝端增加了散热面积，散热效率更快，传热效果更好。

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Solar charge times are determined by the total area and efficiency of the solar cells -- the Spark uses high-efficiency monocristalline cells which will charge an iPad from about 10 hours of sunshine.

ENGADGET: Voltaic Spark Tablet Case powers your pad with the Sun's rays