subsonic
含义: Travelling at or relating to speeds below the speed of sound (below approximately Mach 1, or 767 mph at sea level).
Subsonic is primarily a technical term from aeronautics, describing the speed regime in which most commercial aircraft operate. It contrasts with supersonic and hypersonic. Air behaves differently at subsonic speeds — it can be treated as essentially incompressible, which simplifies engineering calculations. In wider usage, subsonic occasionally appears metaphorically to describe something slow or unimpressive, though this is rare.
例句
- Most commercial aircraft operate at high subsonic speeds, typically around Mach 0.85. 大多数商用飞机以高亚音速飞行,通常约为0.85马赫。La mayoría de los aviones comerciales operan a altas velocidades subsónicas, normalmente en torno a Mach 0,85.ほとんどの民間航空機は高亜音速、通常マッハ0.85前後で運航している。대부분의 민간 항공기는 높은 아음속, 통상 마하 0.85 전후로 운항한다.
- The new drone was designed for subsonic flight, prioritising fuel efficiency over raw speed. 这款新型无人机被设计用于亚音速飞行,优先考虑燃油效率而非纯粹的速度。El nuevo dron se diseñó para vuelo subsónico, priorizando la eficiencia de combustible sobre la velocidad pura.新型ドローンは亜音速飛行用に設計され、純粋な速度よりも燃費効率を優先した。새로운 드론은 아음속 비행용으로 설계되어 순수한 속도보다 연비 효율을 우선시했다.
- At subsonic velocities, the aerodynamic principles governing wing design are fundamentally different from those at supersonic speeds. 在亚音速条件下,主导机翼设计的空气动力学原理与超音速条件下有根本不同。A velocidades subsónicas, los principios aerodinámicos que rigen el diseño alar son fundamentalmente distintos de los que operan a velocidades supersónicas.亜音速における翼設計を支配する空力原理は、超音速のそれとは根本的に異なる。아음속에서 날개 설계를 지배하는 공기역학 원리는 초음속에서의 원리와 근본적으로 다르다.
发音
用法指南
语境: academic, professional
语气: neutral
起源与历史
From Latin sub- (below, under) + sonus (sound) + -ic. Coined in the mid-20th century alongside 'supersonic' as aviation pushed towards and beyond the sound barrier.
文化背景
Era: Modern
Generation: All ages
Social background: Universal
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