热热热久久久免费视频|第四色五月婷婷五月天AV|日韩高清无码免费一级大片|日本成人手机在线视频|中文字幕无码Av在线|台湾a级别黄片免费看|欧美一级性爱亚洲第一性爱|A级黄色电影久草大|www.91精品视频|亚洲AV资源欧洲无码在线观

單詞乎

sound barrier

sound barrier是什么意思、sound barrier怎么讀

sound barrier漢語翻譯

音障

sound barrier英語解釋

名詞 sound barrier:

  1. the increase in aerodynamic drag as an airplane approaches the speed of sound
    同義詞:sonic barrier

sound barrier例句

  1. Residents have been complaining of the "boom" which is heard whenever a jet breaks through the sound barrier.
    居民們一直抱怨噴氣式飛機(jī)在作超音速飛行時所產(chǎn)生的“音爆。”
0
糾錯