列车高速行驶时,会带动周围的空气一起高速运动,离列车越近,空气流速越高。也就是说,离列车越近压强越小,如果有人站在离列车很近的地方,这种气压就很可能会把人“拉”到车轮下,导致惨剧发生。1726年,科学家伯努利通过无数次实验,发现了“边界层表面效应”——流体速度加快时,物体与流体接触的界面上 When the train runs at high speed, it will drive the air around it to move at high speed. The closer the train is to the train, the higher the air flow rate will be. In other words, the closer to the train the less pressure, if someone stood close to the train where the pressure is likely to “pull” people under the wheel, leading to tragedies. In 1726, the scientist Bernoulli through numerous experiments, found “boundary layer surface effect ” - the fluid speed, the object in contact with the fluid interface