| 1. | Countersunk head screws - head configuration and gauging
头部形状和测量 |
| 2. | At last , reconstruct the solid model which is realistic . the solid model will be helpful to medical research
要设计出这样的呼吸器产品就需要逼近真实人体头部形状的cad模型来支持。 |
| 3. | The shm ( single hole microblowing ) as a new perturbation active control technique has been applied to the slender body with different model noses at zero sideslip and high angle of attack
摘要在亚临界流动范围内，对具有不同头部形状的尖拱形细长旋成体在无侧滑大迎角下进行单孔位微吹气扰动控制实验。 |
| 4. | Some categories , such as milestone and task , have only a start shape . others , such as summary task , have shapes for the start and end elements as well as for the middle bars
有些类型（譬如里程碑和任务）只有头部形状，而另外一些类型（譬如摘要任务）则不仅有中间形状，还有头部形状和尾部形状。 |
| 5. | Use the interpolated curve divide the point cloud , avoid the contradiction between the smooth surface and surface precision . make the surfaces connect each other smoothly and can reveal the details of the real head
呼吸器的尺寸参数应该根据工人的实际头部尺寸参数和轮廓形状来制作,其形状应贴合人体头部形状,达到比较好的防护效果。 |
| 6. | Because europa has a relationship with a bull , i have created ornaments that can remind the images or at least glimpses of a bull ( e . g . brooches that have a shape of a bull ' s head and a crow that symbolizes the taurus )
因为欧罗巴和公牛的关系，我创作了一些可以令人联想起公牛的装饰物（比如具有公牛头部形状的胸针，以及一只代表金牛座的乌鸦） 。 |
| 7. | The analyses indicate that the shm ' s control ability has strong adaptability to various slender body at high angles of attack , and its control ability is determined by the original state of the flowfield around the slender body
实验分析表明，单孔位微吹气扰动这一大迎角非对称控制手段具有较强的适应能力，其控制能力的大小则由该头部形状的初始状态决定。 |
| 8. | This field is the key to understand the compression waves and the booming noise , the foundation of the tunnel aerodynamic research , and an important factor to other relating aerodynamic problems . the transient flow field induced by tunnel entry is investigated and clarified with the focus on visualization of the pressure field and the velocity field
这个流场的研究是解决其它隧道空气动力学问题的基础和前提，它们的研究方法和研究成果，直接关系到高速列车在隧道中运行的空气阻力的确定、列车头部形状的研究、长大隧道的通风问题以及出口微压波问题的研究。 |
| 9. | The 3d turbulent flow fields around high - speed trains of four kinds of model uain have been calculated by 3d parallel compute program coded with the algorithms presented in this thesis . from the calculation results , the aerodynamic drag of different types of model trains are obtained , some characteristics of the flow field over the high - speed train are analyzed preliminarily such as pressure distribution and diversification , velocity distribution and diversification , and the affections of different train head shape to pressure . velocity , pressure gradient and the like
用三维并行计算程序模拟了四种不同高速列车车型的外流场，获得了不同车型的运行阻力；详细分析了列车附近流场的压力分布及其变化情况，讨论了列车头型对列车通过时产生的压力波动的影响；分析了四种车型外部流场的速度分布规律及其变化情况，分析了列车头部形状对它们的影响。 |
