transonic speed meaning in English

跨声速度
跨音速

Unlike in subsonic and transonic speed regimes, the interference resulting from the finite size of the test region is seldom present .
不像在亚、跨音速区域，这里因试验段尺寸有限造成的干扰是难得存在的。
Analysis study on transonic speed equal amplitude vibration of a certain type of aircraft
某型机跨音速等幅振动研究
In this paper the direct iterative surface curvature ( disc ) design method is presented for designing airfoils at transonic speeds
本论文采用直接表面曲率迭代方法( disc )进行跨声速翼型设计。
The computed results compared favorably with measurements and the corresponding shock boundary - layer interaction and energy loose during transonic speed was described
以寻找出叶片对能量转换过程中，因气动力原因而造成能量损失的原因，进而提供改良建议。
Accurate calculation of aircraft steady and unsteady aerodynamics and flutter characteristics , especially in the transonic speed range is a crucial problem for aircraft designers . it is very important for us to develop an efficient , accurate , robust navier - stokes / euler flow solver that could be used to study transonic steady and unsteady flowfields
飞行器的定常和非定常气动力的准确数值求解及颤振特性研究，特别是跨音速范围内的准确数值求解及研究，一直以来都是飞行器设计工作者必须面对的重要研究难题。