克鲁姆博士是美国密西西比大学的一位教授。有一次,他向学校借了一辆车和一些测声设备,连夜出发去追雪。他在弗吉尼亚州西部的一个城市找到了雪的踪迹。他住进一个有露天游泳池的旅店,把声纳传声线和传感器接入游泳池里。奇迹发生了。雪在空中是静寂无声的,可是从传感器可以发现,雪一旦落在水 Dr. Krumme is a professor at the University of Mississippi in the United States. Once, he borrowed a car and some sound-measuring devices from the school and set off for the snow overnight. He found a trail of snow in a city in western Virginia. He stayed in a hotel with an open-air swimming pool and connected sonar transmission lines and sensors to the swimming pool. A miracle happened. Snow is silent in the air, but from the sensor it can be found that once snow falls on the water