noun🔗Share亜音速航空機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. "ボーイング737は有名な亜音速航空機です。音速より遅く飛びます。vehiclemilitarytechnologysciencephysicsChat with AIVocabulary GamePractice Reading
adjective🔗Share超音波以下の(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. "その機械は、聞こえるのではなく、感じるだけの超音波以下のうなり音を発した。soundphysicsfrequencyChat with AIVocabulary GamePractice Reading
adjective🔗Share超音速以下の、ほとんど聞こえない(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)"船の騒音が彼女の周りにあった。原子炉と推進機の微かな超音速以下のうなり。soundliteratureChat with AIVocabulary GamePractice Reading
adjective🔗Share亜音速の(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. "小型機は快適な亜音速で飛行した。physicssoundtechnologyChat with AIVocabulary GamePractice Reading
adjective🔗Share亜音速の(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. "小型飛行機は亜音速で飛行し、ジェット機よりもずっと遅かった。physicstechnicalsoundscienceChat with AIVocabulary GamePractice Reading
