2m2m超声速风洞设计引导试验
tests for the 2m2m supersonic wind tunnel design
变声速
variation of the sound velocity
表层声速仪
surface sound velocity meter
超、高超声速
Supersonic and Hypersonic
超声波声速测量
Ultrasonic velocity measurement
超声波声速计
ultrasonic wave velocimeter
超声横波声速
ultrasonic transversal wave velocity
超声声速
Speed of sound
ultrasonic pulse velocity
velocity of ultrasonic sound
ultrasonic velocity
Ultrasonic sound velocity
超声声速测量
Ultrasonic velocity measurement
超声声速法
ultrasonic velocity method
超声声速与衰减
Ultrasonic velocity and attenuation