浮现的黑子区似乎能使当地的声速增加，从而使声波更快地通过这个区域。
The emerging sunspot region seems to boost the local speed of sound, thereby hastening the refracted return of sound waves passing through that part of the solar interior.
光速大约为声速的100万倍，因此光波的反射现象可以有效地用来探测目标物及其距离。
Since the speed of light is about a million times as great as that of sound waves, the reflection of light waves may very well be applied in detecting a target and its distance.
这座储能厂会把“闲时”的电力储存在2500磅的飞轮电池中。 飞轮的轮缘线速度之高，超过声速。
The plant would store cheap "off peak" electricity in 2,500-pound flywheels that turn faster than the speed of sound.
协和式飞机的飞行速度比声速还快。
骨超声声速与骨吸收指标呈负相关。
在对声速面进行处理时采用简单弱爆轰假设。
Simple feeble detonation assumption was adopted in dealing with the sound velocity surface.
声速是海洋声呐测量中最重要的声学参数之一。
The sound velocity is one of the most important acoustic parameter in ocean sonar.
声速检测采用比较法，相对误差小于0.5%。
为局部超声速区解的稳定，采用人工密度修正。
An artificial density correction is used for the stability on local supersonic region.
对超声速反向射流混合加热方案进行实验验证。
The heating scheme by supersonic counter flow mixing has been tested.
后者具有高的耦合系数，低的声速，好的温度稳定性。
The latter has high coupling coefficient, low acoustic velocity and excellent temperature stability.
程序中采用分层等梯度近似来描述海洋中的声速分布。
The programs adopt stratified constant-gradient method to approximately describe the sound velocity distribution.
可以预料，航空学的下一个重大飞跃将是高超声速飞行。
The next grat leap forward in aviation is expected to be hypersonic travel.
在影响多普勒计程仪测速精度的多种因素中，以声速的影响为最大。
Among the factors which affect the accuracy of Doppler log, the speed of sound is the most important one.
结果表明由超声波测试得到的声速值可以方便地估算出混凝土的强度。
The test results indicated that the strength of concrete could be estimated by supersonic velocity values.
本文介绍了一种涡格方法，它适用于亚声速飞机的纵横向气动特性计算。
This paper presents a vortex lattice method which is suitable for the calculation of subsonic longitudinal and lateral aerodynamic characteristics of aircraft.
高超声速化学非平衡尾流的分析与计算是空气动力学中的一个重要课题。
The analysis and computation of chemical nonequilibrium hypersonic wakes are important tasks of aerodynamics.
对薄型材料中超声波传播规律进行分析，得到材料声速与共振频率的关系。
The relation between sound velocity and syntonic frequency is gained by analyzing the ultrasound transmitting in thin material.
横波声速与类瑞利波声速在数值上的差别是明显的，不容忽视，不宜混淆。
The difference between the values of the velocities of the transverse wave and the Rayleigh-like wave cannot be neglected.
亚声速气动力采用面源法计算，高超声速气动力采用修正的牛顿流理论计算。
Panel Method was used for subsonic aerodynamic analysis, and the Modified Newtonian Impact Theory was used for hypersonic aerodynamic analysis.
吸气式高超声速飞行器是下一代单级入轨和高超声速巡航研究的重点飞行器。
Air-breathing hypersonic vehicle(AHV) has been the next generation single stage to orbit vehicle and hypersonic cruise vehicle.
针对高超声速再入飞行器最远距离滑翔制导关键技术，设计了一种新型制导律。
A novel guidance law is devised for developing the guidance technology of optimal glide of a hypersonic reentry vehicle.
运用此方法，本文数值模拟了三维开式空腔的超声速、跨声速、亚声速流动。
Using the above method, numerical simulations are implemented for supersonic, transonic and subsonic flows around three-dimensional open cavities.
本文采用改进的流线曲率法对跨声速多级轴流压气机非设计点进行了性能模拟。
An improved streamline curvature numerical method is modified and applied to better approximate the flow fields of multi-stage transonic axial compressors.
海域水文资料的不断丰富和声速仪的广泛使用，推动了水深声速改正精度的提高。
The accuracy of depth reduction has been improving with the continuous accumulation of hydrographic data and widely application of sound velocity profiler.
海域水文资料的不断丰富和声速仪的广泛使用，推动了水深声速改正精度的提高。
The accuracy of depth reduction has been improving with the continuous accumulation of hydrographic data and widely application of sound velocity profiler.
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