第 37 季，第 13 集: Elevators move millions of passengers every day. In TRAPPED IN AN ELEVATOR, NOVA reveals the secret life of these ubiquitous machines. Once brawny but simple machines, elevators are getting a brainy makeover. Computer controls are getting passengers to their destinations faster and more safely than ever before. But will the elevator-wary be comfortable handing over the reins to computers?
Documentary · 2010年11月2日 · 52 分钟