adj.亚声速的，亚声速飞行的
n.亚音速飞机

The aircraft is capable of flying at subsonic speeds, making it ideal for surveillance missions.
这架飞机能够以亚音速飞行，这使得它非常适合执行监视任务。
Subsonic wind tunnels are commonly used in aerodynamic research to test scale models of aircraft and vehicles.
亚音速风洞常用于空气动力学研究中，以测试飞机和车辆的缩比模型。
The new train technology allows for subsonic travel between major cities, significantly reducing travel time.
新的列车技术使得在主要城市间进行亚音速旅行成为可能，大大缩短了旅行时间。
Subsonic frequencies are below the range of human hearing, which starts at about 20 Hz.
亚音速频率低于人类听觉范围，人类能听到的声音大约从20赫兹开始。
The subsonic cruise missile is designed to penetrate enemy defenses undetected due to its low noise signature.
亚音速巡航导弹设计用于低噪音穿透敌方防御而不被发现。
In contrast to supersonic aircraft, subsonic planes consume less fuel and are generally more cost-effective for commercial flights.
与超音速飞机相比，亚音速飞机消耗更少的燃料，通常对商业航班来说更具成本效益。
The subsonic jet engine operates efficiently at speeds below the speed of sound, providing smooth and quiet flight.
亚音速喷气发动机在低于音速的速度下高效运行，提供平稳且安静的飞行体验。
Biologists use subsonic sound waves to study the behavior of marine life without disturbing their natural habitat.
生物学家利用亚音速声波研究海洋生物的行为，而不会干扰它们的自然栖息地。
The subsonic drone can stay airborne for extended periods, making it ideal for monitoring weather patterns or wildlife migration.
亚音速无人机可以在空中停留很长时间，非常适合监测天气模式或野生动物迁徙。
The concert hall was specifically designed to enhance the experience of subsonic music, creating a deeply immersive auditory environment.
音乐厅特别设计来增强亚音速音乐的体验，创造了一个深度沉浸式的听觉环境。