When high-speed train enters into a tunnel, a series of aerodynamics effects such as pressure variation in carriage noises were created.
When high-speed train enters into a tunnel, a series of aerodynamics effects such as pressure variation in carriage noises were created.
摘要高速列车进出隧道时会产生一系列空气动力学效应，引起噪声及车厢内压力的变化。