英语语法分析

This is 20,000 feet higher than most subsonic airliners.

这比多数的次音速客机要高上两万英尺。

《柯林斯英汉双解大词典》

Future Aircraft Team Presentations for Subsonic concepts.

未来飞行器团队报告：亚音速概念。

These phenomena are controlled by the nature of the subsonic flow field.

这些现象也反映了燃烧室内亚音速流场的性质。