As to the selection of rotor blade number for light and medium helicopter, 4 blade and 5 blade rotor are typical.

而旋翼桨叶片数的选择，对轻型和中型直升机来讲，4片桨叶旋翼和5片桨叶旋翼具有典型意义。

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During the design procedure for axial flow blood pump, proper blade number is important to whole flow performance in the pump.

在人工轴流心脏泵的设计过程中，叶片数目的选取对泵的工作条件的影响很大。

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The influence of blade number, blade thickness, location of splitter blades and tip clearance on mass flow, pressure ratio and efficiency is showed.

讨论了改变叶片数目，增加叶片厚度，调整分流叶片周向位置以及增加间隙高度等对离心叶轮流量、压比和效率等总体性能的影响。

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For a second year a band of unhappy shareholders, led by Boston's Walden Asset Management and including a number of religious groups, organized a revolt against the way razor blade giant Gillette elects its directors and manages its affairs.

FORBES: So That's Where My Proxy Goes