1、

The main hydraulic problem for low specific speed centrifugal pumps namely lower efficiency, drooping head-flow curve and easily overloading brake horsepower are introduced and the fundamental requirements for modern hydraulic design are discussed.

介绍了低比速离心泵在水力性能方面存在的主要问题,即效率低、易产生驼峰和易过载,讨论了现代水力设计的基本要求。

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2、

This paper presents the major parameters of hydraulic turbines one by one, such as rated head, specific rotating speed and specific speed coefficients, unit flow, unit speed, cavitation coefficient, efficiency, stability etc.

对构皮滩水电站水轮机的额定水头、比转速及比速系数、单位流量、单位转速、空化系数、效率、稳定性等逐一进行论述,介绍了基本参数和参数水平。

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3、

This paper gives a model of "Document-type and Readership-flow" to improve its efficiency and meet the needs of the general and specific character of the readers.

如何提高一校多馆制下的管理效益,满足读者共性和个性的需求,本文提出了文献类型&读者流的管理模式思想。

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4、

Comparison of the design with that of LXT 14/ 46 type drum is made. The test data show that the specific energy consumption reduces by 7 97%, the load fluctuation coefficient by 19 8% and the loading efficiency increases by 11 1%.

对LXT14/46型螺旋滚筒进行了对比计算,结果表明:螺旋滚筒的截割比能耗降低了7.97%,载荷波动系数减小了19.8%,装煤效率提高了11.1%。

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5、

The CBR business simulation results show that, HGR protocol to communicate with the group of internal communication efficiency, communication, real-time, communication between the groups when the good stability, more suitable for this particular battle, the specific environment.

对CBR业务的仿真试验结果表明,HGR协议具有在组内部通信时通信效率高、通信实时性好,组与组之间通信时稳定性好等特点,比较适合战场这一特殊、特定环境下的应用。

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6、

It is resolved that design condition efficiency for low specific speed centrifugal pump is not the highest in terms of experiential statistical area ration value.

解决泵行业一直依据经验统计值确定面积比而不能使低比转速离心泵在设计点效率最高这一问题。

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