超声速

The absolute/convective instability of incompressible swirling flows and the temporalinstability of compressible swirling flows have been fully explored, whereas the absolute/convectiveinstability of compressible swirling fl.

从N－S方程出发，通过正则模方法，研究了超声速尾涡的绝对／对流不稳定性性质。

The scramjet is a new type of air-breathing propulsion device, which has remarkable performance and great potential superiority, and has a good prospect in the field of military aviation in the future.

超声速燃烧冲压发动机是一种新型的吸气式动力装置，因其良好的性能和巨大的潜在优势，在未来的军事和民用的航空、航天领域中具有广阔的应用前景。

The scramjet is a new type of air-breathing propulsion device, which has remarkable performance, great potential superiority, and has a good prospect in the field of aeronautics and astronautics in the future.

超声速燃烧冲压发动机是一种新型的吸气式动力装置，因其良好的性能和巨大的潜在优势，在未来的航空、航天领域中具有广阔的应用前景。

Based on engineering design method and combined with numerical simulation,an axial symmetry supersonic inlet with boundary layer bleed was designed.

应用工程设计方法，结合数值模拟，设计了一种带有边界层吸除型式的超声速轴对称进气道，对进气道内流场进行了数值模拟研究，并且进行了风洞实验。

Jet counterflow is usually used for the motion state control of aerospacecraft such as a missile, a shuttle, a satellite, and a spaceship, etc.

超声速射流逆流通常用于导弹、航天飞机、卫星和飞船等飞行器运动状态的控制。

This paper referred to simulating the supersonic double cone inlet" s flow field of ramjet pill assisted range projectiles at a variety of working circumstances, pressure contours, density contours and Mach number contours of inlet" s flow field were given When cone combination, relative location of cone core and cowl lip, the pressure of outlet, inflow Mach number and angle were changed, flow field and performance parameters of inlet can be affected. Simultaneity, productive mechanism and inducing factors of the inlet surge were also discussed. Then the best working conditions and the best model of inlet were obtained.

本文对冲压增程弹丸所用发动机的双锥超声速进气道在各种工况条件下的流场进行了数值模拟，给出了进气道流场的等压线图、等密度线图和等马赫线图，从而观察在不同的锥尖角组合、锥芯与外罩唇口的相对位置、出口反压、来流马赫数和攻角时，对进气道流场及性能参数的影响，并探讨喘振现象的产生机理及诱导因素，以便确定最佳的工作状态，得到最优的进气道模型。

The structure and properties of coating are observed and analysed by means of Scanning electron microscopy and X-ray diffraction, and compared to electroplate d layer.

采用超声速火焰喷涂技术制备了镍基涂层，利用扫描电镜、X射线衍射仪等对涂层结构和性能进行了观察和分析，并与电镀涂层进行了对比。

And to study match of inlet and engine as well as the control of inlet.

并可用于进气道与发动机的匹配以及超声速进气道控制研究。

Complex wave structures of supersonic inlet at different inflow Mach number and angle of attack related to critical status were achieved by numerical simulation.

通过数值模拟得到了对应于不同来流马赫数和攻角情况下，临界工况时，超声速进气道内外粘性流场复杂的波系结构。

Using the theory model, a water jet atomized in a supersonic crossflow with Mach number 1.94 was simulated.

利用该模型对来流Ma=1.94的超声速气流中的水射流的雾化进行了数值模拟。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。