声速的

This method is based on the Snell law of acoustic propagation in water. Different velocity gradients among linear layers in water are utilized to draw the sound ray chart, and a mathematical model of the geometric operational range is built. Furthermore, the geometric homing range is predicted with sound ray density, a prediction system of geometric operational range for acoustic homing torpedo is designed and the function of the system is realized through a system software. The sea trial demonstrates the prediction validity of the system.

该方法基于声波在水中传播的Snell定律，利用水中各线性分层间不同的声速梯度，绘制声线图，建立了几何自导作用距离的数学模型，并通过声线密度对几何作用距离进行预报，设计了声自导鱼雷几何作用距离预报系统，并通过系统软件实现了其功能，经测试，该系统在海上试验中取得了良好效果。

The accuracy of this equation to calculate the thermodynamic properties such as pvT, saturated liquid density, isochoric heat capacity, speed of sound, second virial coe...

比较了HFC－32的热力学性质，包括：压力－比容－温度、比定容热容、声速、第二维里系数、饱和液密度等的测量值与本状态方程计算值。

Therefore, the constitution of an accurate numerical analysis system for the transonic axial compressor becomes more and more prevalent.

因此，建立一套能够准确分析跨声速轴流压气机流场的分析系统是当前许多叶轮机研究者竭力追求的目标。

This paper presents the diagnosed results for argon nitronitrogen mixture jet as the second part for spectroscopic diagnosis method on non equilibrium arc boated jet .

本文是非平衡电弧加热射流光谱学诊断方法实验研究工作的第二部分，给出了氩，氮混合射流的结果，证明亚声速射流中确有非平衡囊兜现象存在

This is the first step for H〓 pilot flame igniting the combustible, two phase flow of hydrocarbon.

目的是为了弄清燃料的混合机理，为以后两相超声速燃烧的数值模拟打下基础。

These phenomena indicate that a lot ofwaxes have crystallized in waxy oil and the oil is jelling.

含蜡原油声速和衰减系数的变化对应于含蜡原油中有大量蜡晶析出与凝结的过程。

In our experiments,the propagationvelocity and the coupling coefficient for the high-velocity surface acoustic mode ismeasured on a free surface as well as on a metalized surface.

在实验中，采用四种经常使用的压电晶体，对这种表面高速模式进行声速和耦合系数的测量，分别在自由表面和金属化表面进行。

Finally,the conclusion is draw that it is necessary to make that tentative study of the hypers...

最后进行了讨论：高超声速控制技术是一个全新的领域，目前国内在这方面研究较少，进行这方面的尝试研究是非常有必要的。

It can be seen from this article that the two methods have demonstrated the working capacity for calculation of frictional force and thermal load on surface of a hypersonic winged flight vehicle, which moves in dense atmospheric layers on a trajactory with stationary values of velocity head.

由文可见，对于在稠密大气层内，沿轨道运行头速度恒定的高超声速有翼飞行器，能够用本文所采用的两种方法计算其表面摩阻和热载荷。

The W-shaped tailless aircraft has not stabilizer and vertical tail,and it is based on the design of forward-swept wing and the integrated design of blended wing-fuselage.

W型无尾飞机基于前掠翼及翼身融合的一体化设计，取消了平尾和垂尾，可大幅降低雷达反射截面积，减轻结构重量；同时具有亚声速气动效率高、横航向操纵面效率高的优势。

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。