比转数在150以上的离心泵具有陡降性能曲线。
Compared to 150 in number over the centrifugal pump with Douxiang performance curve.
采用该方法对一比转数为84.8的离心泵进行优化。
A centrifugal pump with special speed of 84.8 was optimized with the method.
总之，本文初步提出了用叶轮几何参数计算比转数的公式。
In general, a new formula is presented for computing specific speed with impeller geometric parameters.
根据循环水泵不同的比转数和不同的结构，论述具体切割方法和效果。
According to the difference between the proportion of turn and construction of circulating water pump, the author expatiates on the specific cutting methods and their effects.
本文提出了比转数和汽蚀比转数的统一定义，并推导和推荐了相应的计算公式。
This paper presents the unified definitions of specific speed and cavitation specific speed and derives their respective formulas.
结果表明，低比转数蜗壳泵不宜采用常规设计，进而提出了一种新的设计方法。
The results reveals that the conventional design is not suitable for designing a very low ns volute pump and a new design is presented.
阐述了比转数为24的高温高压循环蜡泵的结构设计、水力设计及一些需注意的问题。
The structure design, hydraulic design, and some noticeable problems of the high temperature and high pressure circulating wax pumps with a 24 specific speed were described.
分析了低比转数离心泵出现不稳定扬程-流量特性曲线及功率过载的原因，提出了相应解决办法。
The cause of occurrence of power overload and the unstable curve of head-flow volume for low rate ratio pumps was analyzed in this paper. Some methods, then, were presented to solve the problems.
着重叙述了低比转数叶轮的设计方法、试验研究，对进一步开发、应用小流量化工用离心泵具有重要指导意义。
The research on design method and test for low specific speed impeller are recounted specifically. It is of very importance to further develop and use in low-flow chemical centrifugal pumps.
指出了目前不相容聚合物共混体系相态反转数学模型的不足，提出了能量比模型的概念，认为这是研究不相容聚合物共混体系相态有效的方法。
The concept of the model of energy ratio, which is an effective method to study phase morphology of immiscible polymer blends, was put forward.
指出了目前不相容聚合物共混体系相态反转数学模型的不足，提出了能量比模型的概念，认为这是研究不相容聚合物共混体系相态有效的方法。
The concept of the model of energy ratio, which is an effective method to study phase morphology of immiscible polymer blends, was put forward.
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