subsonic speed meaning in Chinese

次音速速率
亚声速，亚音速

This airplane can go out to high subsonic speeds very easily without using afterburner
这架飞机能够很轻松地在不打开加力的状态下飞到高亚音速。
What he envisions is an ellipsoid with tiny wings that he says can take off vertically and move like an alien spaceship , albeit at subsonic speed
他所设想是极有椭翅膀起飞,他说像一个垂直和举措外国人飞船,不过亚音速速度
The relationship between the load measured by strain method and the load calculated according to flight parameters and the wind tunnel test data has been investigated in this thesis . the result showed that the calculation load based on the flight parameters and wind tunnel test data is acceptable in subsonic speed and gets good agreement , with the load measured by strain method
本文研究了采用应变法实测载荷和根据飞行实测参数和风洞实验数据计算载荷之间的关系，研究表明采用飞行实测参数和风洞实验的数据计算载荷在亚音速范围内是可行的，与采用应变法实测载荷是吻合的。