词汇 | subsonic |
释义 | subsonic adjective uk /sʌbˈsɒn.ɪk/ us /sʌbˈsɑː.nɪk/ slower than the speed of sound亚音速的,亚声速的 Opposite supersonic See also sonicspecialized Air travel: travelling by aircraft aboard aeronaut air bridge air corridor air rage air taxi bird strike business class coach crash-land hop jet jet-lagged landfall medevac non-flying post-landing reclaim scramble subsonically You can also find related words, phrases, and synonyms in the topics: Slow and moving slowly Examples of subsonicsubsonic If the flow is still subsonic downstream of the area change, the characteristics starting there will point upstream and will reach the area change. Miles (1950) studied the matter of the ' compressibility correction' for wings oscillating sinusoidally in subsonic flow. However, this condition is not exclusively a supersonic one, since it can also be met if the ion flows are individually subsonic. The associated variation in the (subsonic) proton speed also corresponds to a compression (up < 1), while the (subsonic) electrons are accelerated. The grey zone highlights the supersonic regime, the white zone indicates the subsonic region. Based on all the above data it appears that only the axisymmetric instability and acoustic wave modes are allowed in subsonic resonant impinging jets. The subsonic case (figure 12a) is asymmetric, indicating possible pressure communication across the potential core. Now, close to the stagnation point the speeds are subsonic, and all compressibility effects are due to thermal variations in the fluid properties. It follows that solitons may propagate at subsonic speeds in a cone of obliquity. Some results of an experimental investigation of forces associated with the subsonic flow of air around a circular cylinder in a wind tunnel are presented. A subsonic wave with constant amplitude generates no sound. A second set of boundary conditions consistent with the given body profile is imposed on the subsonic side. Note, however, that many of their results apply t o regions where the jet is subsonic and are then valid. This, however, only applies t o the subsonic case. However, the region that radiates noise in the subsonic case is far from the peak amplitude wavenumber. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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