The influence of the number of blades on the affinity law of impeller trim for the centrifugal oil pump is obtained.

得到了叶片数对离心油泵叶轮切割定律的影响规律性。

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A simplified model of propeller with infinite number of blades is employed to account for the effect of free wave in this paper.

为了便于计算，对兴波部分简化了计算模型，螺旋桨用无限叶数螺旋桨模型来代替。

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The effect of the number of blades on the head exponent is the largest, on flow rate exponent is lager and on power, efficiency exponents are minimal.

叶片数对扬程切割指数的影响最大，对流量切割指数影响较小，对轴功率和效率切割指数影响最小。

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Which means King of Shaves will have a number of loyal customers, all purchasing new blades at regular intervals, providing King of Shaves with steady and predictable cash flow.

FORBES: King of Shaves' New Subscription Based 'Razor And Blades' Strategy

Mark Nicholls, the founder and chief executive of Sportexe, the number two maker of artificial turf in the NFL, has patented the process of "tufting" fiber optics with blades of plastic grass.

FORBES: Magazine Article

This technology will be available soon, making its grand entrance as a National Football League field in the U.S. Mark Nicholls, the founder and chief executive of Sportexe, the number two maker of artificial turf in the NFL, has patented the process of "tufting" fiber optics with blades of plastic grass.

FORBES: Magazine Article