多角数

And by further correlated analyze the surface and spatial moving process and trajectory of different vortices, and the representative points on the vortex line and characteristic points on the curve of side force distribution, a physical model of multi-asymmetric vortices over a 3-D slender body is developed.

在对每个背涡从物面到空间发展和运动轨迹、不同背涡在空间的特殊位置关系、以及这些特殊位置与截面侧向力分布特征点的相关性进行对应分析的基础上，建立了细长体在大迎角亚临界Re数流动状态下非对称多个背涡的空间三维涡系结构物理模型。

Stepping motor is a kind of electromechanical component that is driven in step angle or line displacement by electric pulse signal. Because of having the advantage of easy open-loop control and no accumulating error, stepper motor is being applied widely in many fields.

论文 页数：54 字数：22722摘要：步进电机是一种将电脉冲信号转换成相应的角位移或线位移的机电元件，具有易于开环控制、无积累误差等优点，在从多领域获得了广泛的应用。

The data of polymorphism information contents, effective number of alleles and heterozygosity indicated that, the genetic variation of Small-tailed Han sheep was the highest, Mongoha sheep was the second, Lanzhou large tailed sheep was the third, Tibet sheep was the fourth, Poll Dorset sheep was the lowest.

多态信息含量、有效等位基因数及群体杂合度数据表明，小尾寒羊遗传变异最大，其次是蒙古羊、兰州大尾羊、藏羊，无角道赛特变异最小。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。