声速

A new wing/body configuration of a glide hypersonic vehicle was presented, which was generated by conic lofting design method.

提出了一种新的翼身融合的滑翔式高超声速飞行器布局方案。

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。

Can accurately measure the zero offset probe (School 0:00), sound velocity and the K value.

可准确地测量探头的零点偏移、声速和K值。

Our shock data and the gained recognition on dynamic response behavior of HDG is valuable for improving the precision of sound velocity measurements for metals and non-metals at pressures over the megabar range.

本文报道的重玻璃材料高压物性数据和序列相变认识对于发展反向加载技术、提高材料声速测量精度和适用压力范围具有实用价值。

Naphthol (1HN) clusters have been studied in supersonically cooled molecular beam by using UV laser ionization.

用飞行时间质谱仪和超声速脉冲分子束技术研究了紫外激光对1-萘酚(1HN)团簇的电离质谱。

The results show that the discharge and cooling stages of sparkjet were simulated by computational method. The instance energy input can produce the condition of high pressure and temperature in the actuator, which induce the forming of synthetic jet. With the increment of the input energy, the velocity of the synthetic jet could be increased to the supersonic state. Under the periodic energy input, the distribution of the sparkjet velocity on the nozzle is non-sinusoidal. And the discharge velocity of jet is much larger than the suction velocity of the flow from environment.

计算结果表明：采用本文的计算方法可以模拟出火花型激励器喷射、吸入的工作阶段；电火花瞬间能量的输入产生了腔体内的高温、高压环境，从而诱发合成射流的形成；当激励能量增加，激励器产生的合成射流速度增加，可达到超声速状态；周期性激励下，火花型合成喷喷口处的轴向平均速度随时间不是正弦分布，且喷射过程的最大速度要远远大于吸收过程的最大速度。

The author unites PC, traditional ultrasonic－ testing device, high－ speed data acquisition card and software together as a system. This system can finish A,B,C and P scanning, determine velocity in the tested material ,measure the height, show the defect pictures inside and recognize the defect, etc. The digitization, picturization, intelligence and automation of the testing are realized.

该卡与传统超声探伤仪， PC586计算机以及高级编程软件可非常方便的构成智能化超声检测系统，具有 A、 B、 C、 P扫描、声速测定、厚度测量、图象显示以及缺陷识别等功能，实现了超声检测的数字化、图象化、智能化、自动化。

Besides, the influence of cell Reynolds number on the sphere stagnation point heat transfer rate is analysed by comparing the present results with those available.

通过求解完全Navier－Stokes方程，得到了高超声速情况下钝头体轴对称绕流的较满意结果，同时讨论了网络Re数对驻点热流的影响。

The acoustic modes of phonons dispersion relation are probability of the vector q , and their group velocities in the [001] direction are vL = 5.1k m /s and vT = 3.6 km /s, respectively.

声子谱中的声学模式在低频区与波矢成线性关系的，它们沿[001]方向声速分别为vL = 5.1k m /s和vT = 3.6 km /s。

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。