亚洲AV成人精品一区二区三区四区|快播日韩美嘛豆一区|国产欧美激情a级免费|一级黄片AAA色一品|久久国产成人精品Av|谁有AV免费观看|成人高清国产视频|日韩区欧美区久久综合一区|在线观看黄色网页|亚洲欧美国产11

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(shí)所產(chǎn)生的“音爆?!?/div>
0
糾錯