超音速的

It is shown that in Jameson's algorithm is not an orthogonal stream-lines coordinate system, but a local stream-lines coordinate system instead. Nevetheless, because of the finite-difference discretization in Jameson's scheme is not carried out along the direction of s and n, but along the Cartesian coordinates, the analysis on all terms of the full potential equation in Cartesian coordinates reveals that his scheme does take a back-ward difference along the streamwise exactly at all points in the supersonic flow region.

表明其所采用的坐标系不是真正的正交流线坐标系，而是局部流线坐标系；同时由于Jameson方法并不对s，n进行差分离散，而是在原笛卡尔坐标系下作差分离散，对笛卡尔坐标系下的全位势方程中的各项的分析表明，Jameson方法恰好能做到在超音速点沿真正的流线方向作后差分。

On the basis of shock wave characteristic of the supersonic projectile and the detailed analysis of measured datas,a method of decomposing and reconstructing the trajectory shock wave signal and muzzle blast wave signal is proposed and the characteristic parameters for positioning sound source and calculating trajectory vector with regular tetrahedron detection array are extracted.

根据空气动力学原理，在阐述超音速弹丸的弹道波特性的基础上，通过详细分析实测的声信号，提出了弹道波信号和枪口冲击波信号的小波分解和重构方法，提取了利用正四面体探测基阵进行声源定位和弹道矢量计算的特征参数，获得了满意的实验结果。

Simulation results also show that saddle-shaped distributed AMF can more effectively inhibit constriction of vacuum arc.

对于小电流扩散态真空电弧，重点仿真分析不同电弧电流与不同纵向磁场对其关键特性的影响，部分仿真结果进行了实验验证；对离子处于超音速流动的收缩态真空电弧的仿真表明，真空电弧的磁收缩主要是由于霍尔效应引起的，离子温度和电子温度沿轴向先增大后减小，马鞍形分布的纵向磁场能够更有效地抑制真空电弧的收缩，而且阴极斑点分布对真空电弧特性也有着显著的影响；对离子处于亚音速流动状态的大电流真空电弧的仿真表明，部分等离子体不能到达阳极而损失，马鞍形分布的纵向磁场能够更有效地抑制电弧等离子体的损失，同时能使阳极电流密度和能流密度的分布更加均匀。

This pact can gives natural make-up look without cakey.

高机能性，能达到防水防油不脱妆又能完美呈现自然遮瑕的肌肤及透净的妆感，含妆感极度浮贴的&微细粒子&，以超音速2倍之气流直接推动粒子与粒子的碰撞而产生微细且均匀的粒子粉末，使妆感服贴双重抵抗紫外线效果，能有效保护被阳光曝晒之肌肤妆感不厚重黏腻，让您感受轻爽无负担的魅力肌肤含有长效控油配方，能抑制油脂分泌，给予洁净清爽的肌肤添加亲肌肤性的植物性成分，使肌肤润泽有气色

Secondly, the flow of condensation steam was compared with the flow of ideal gas. From the contrasted results, it can be found the difference between the condensative steam flowing and ideal-gas flowing. And, it also can be found out that it is inevitable to condense for steam flowing under the supersonic state. At the same time, the major areas which formed second drips have been displayed in the solved results. Finally, the flow of condensation steam in the 3-dimension model has been simulated.

其次，对比了具有凝结的蒸汽与理想气体之间的流动情况，经过对比可以发现凝结蒸汽在流动中与理想气体之间的差异，发现蒸汽的凝结在超音速状态下是不可避免的，并且在计算结果中通过图形显示出了形成二次水滴的主要区域。

In airplane design, structural nonlinearities cannot be avoided. The structuralnonlinearities arise from worn hinges of control surfaces, loose control linkages,material behavior and various other sources. In the flighting, the aerodynamicnonlinearities also cannot be avoided. The aerodynamic nonlinearities can benegligible when the speed of the plan is not very high;but when the speed of the planis supersonic or highly supersonic, it cannot be negligible.

在飞机设计中，结构非线性是不可避免的，结构非线性源于控制其表面的旧铰链，松散的控制器联动装置，材料性能和其它的来源；在飞机的飞行中，气动的非线性也是不可避免的，对于飞行速度不是很高的情况，气动的非线性是可以忽略的，而对于超音速以及超高音速的飞机来说，气动的非线性是不可以忽略的。

The high velocity arc spraying technology and powder-cored metal threads were bi-used to repair the waste components, and the integration between coating preparation and materials formation to Fe-Al base intermetallic compounds came true. A new supersonic ion spraying technique, named bi-channel, bi-temperature, was invented to solve successfully the issues of over-melting, half-cooked and burned materials. The high-energy mechanical and chemical method with own property right was explored to solve successfully the issue, which the nano particles dispersed evenly and suspended stably in the solution. After perfecting the techniques the high-performance co-electrodeposition between the conductive matrixes metal Ni and the nonconductive nano particles carried out. The excellent nano anti-friction self-repairing additives was prepared to achieve elementarily the self-repairing on the worn surface during the equipment worked.

首次将高速电弧喷涂技术与粉芯丝材相结合的方法应用于再制造零部件的表面修复，实现了Fe-Al金属间化合物的制备与涂层成形一体化；发明了一种&双通道、双温区&的高效能超音速等离子喷涂新工艺，解决了过熔、夹生及烧损问题；开发了具有自主知识产权的高能机械化学法，解决了纳米电刷镀时纳米颗粒在多离子溶液体系中的均匀分散与悬浮稳定的难题，通过工艺优化实现了非导电的纳米颗粒与导电的基质金属镍的高效共沉积；发明并制备了性能优异的纳米减摩自修复添加剂，初步实现了在装备运行过程中对磨损部位的原位动态自修复。

In this paper, experimental study (Ma=2.0 of cold flow) on a scramjet combustor model without combustion was carried on direct-connected facility. The effects of inflow parameter, length of isolator and back pressure on combustor and isolator flow field were analyzed and compared. The flow field of combustor was simulated with CFD software and the experimental results were compared.

文中在超燃冲压发动机燃烧室直连式实验设备上，对超音速燃烧室模型进行( Ma ＝2.0)冷流实验研究，比较了不同的来流条件、不同的隔离段长高比和不同的燃烧室出口反压对燃烧室内部流场以及燃烧室隔离段的抗扰动能力的影响，并利用数值模拟的方法对燃烧室内部流场进行了模拟。

The calculation and experiment results show that the maximum lifting pressure performance decreases with the increase in throat diameter of channel of variable section, water flux of low pressure and pressure ratio of steam nozzle, and has its minimum value with water nozzle annular space. The coefficient of maximum lifting pressure performance may be as high as 26. In the design of steam injector, the larger pressure ratio of steam nozzle and the smaller water nozzle annular space are selected, the higher lifting pressure performance could be obtained.

计算及研究表明：极限升压能力随变截面混合腔喉部直径、被升压的低压水流量和蒸汽喷嘴压比增加而降低，随环形水喷嘴间隙的变化出现了最小值；计算得出变截面超音速汽液两相流装置的极限升压能力可达26；在设计升压装置时应尽可能选取较大的蒸汽喷嘴压比和较小的环形水喷嘴间隙。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。