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可雷蒙德·克拉森，瑞典伦德大学的生物学家，这项研究的带头人却说，正是这些充足的脂肪储存，使沙锥鸟能够一口气完成如此长距离的飞行。
But it's these ample fat reserves that allow the birds to fly such long distances without stopping, said study leader Raymond Klaassen, a biologist at Sweden's Lund University.
对纯水液压锥阀阀口流场气穴进行了数学建模，并用FLUENT软件进行了仿真分析，从而得到气穴发生的程度与流场压力分布之间的关系。
The flow field cavitation inside the water hydraulic poppet valve was modeled and analyzed by using the software of FLUENT, and the relation between the cavitation and the pressure was investigated.
根据计算结果，分流比对分割尺寸的影响比较小，半锥角、溢流口尺寸与底流口尺寸对分割尺寸的影响比较大。
It is indicated that the split ratio has a relative small effect on the cutting size while the semi cone Angle and sizes of overflow and underflow orifices have very large effects.
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