noun🔗Share亚音速飞机，低音速飞机 An aircraft whose maximum speed is less than the speed of sound"The Boeing 737 is a well-known subsonic; it flies slower than the speed of sound. "波音737是一种广为人知的亚音速飞机，它的飞行速度低于音速。vehiclemilitarytechnologysciencephysicsChat with AIVocabulary GamePractice Reading
adjective🔗Share次音速的，亚音速的 (of a sound, scientific) having a frequency too low to be audible"The machine emitted a subsonic rumble that we could only feel, not hear. "这台机器发出一种次音速的低频震动，我们只能感觉到，却听不见。soundphysicsfrequencyChat with AIVocabulary GamePractice Reading
adjective🔗Share亚音速的, 低于音速的 (of a sound, literary) very quiet, almost inaudible"The noise of the ship was all around her. The faint subsonic rumble of the reactor and drive. (Leviathan Wakes, James S. A. Corey)"船的噪音包围着她。反应堆和推进器发出几不可闻的低沉轰鸣。soundliteratureChat with AIVocabulary GamePractice Reading
adjective🔗Share亚音速的，低于音速的 (of a speed) less than the speed of sound (in the same medium, and at the same temperature and pressure)"The small plane flew at a comfortable, subsonic speed. "那架小飞机以舒适的亚音速速度飞行。physicssoundtechnologyChat with AIVocabulary GamePractice Reading
adjective🔗Share亚音速，低于音速的。 (of a flow) with a Mach number such that 0.3 < Ma < 0.8 (approximately - the exact limits vary between sources)"The small airplane flew at a subsonic speed, much slower than a jet. "这架小型飞机以亚音速飞行，比喷气式飞机慢得多。physicstechnicalsoundscienceChat with AIVocabulary GamePractice Reading
