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In this paper, the frictional torques exerted on the blades of turbine flowmeters are theoretically analyzed in some detail by means of boundary layer theory. A formula for calculating frictional torques is thus obtained.本文应用边界层理论，从理论上相当详细地分析了作用于涡轮流量计叶片上的摩擦力矩，从而得出了计算摩擦力矩的公式。

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Asia’s strength of economic management, however, has not been its perfection, but its pragmatism and flexibility.亚洲经济管理向来不以完美见长，而是以务实和弹性取胜。

Washington who could have been king insisted that ultimate sovereignty lay with the people.华盛顿原本可以成为国王，坚持至高无上的权力应归人民所有。

When the students finished all the books they had brought, they opened the lunch and ate it.学生们看完了随身带的书，就打开饭盒吃起来。

Writers cannot bear the fact that poet John Keats died at 26, and only half playfully judge their own lives as failures when they pass that year.作家们无法忍受这一事实：约翰·济慈26岁时就死了，于是就几乎半开玩笑地评判他们自己的一生是个失败，这时，他们才刚刚过了这一年。