国家地理.超大建筑狂想曲.希思罗机场 big bigger biggest airport (2009)认领

　　London's Heathrow Airport is the world's busiest and home to one of the tallest terminals - T5. NGC reveals how ingenious breakthroughs enabled engineers to build the super structure. With its enormous free span roof, automated baggage system and robotic vehicles, T5 can feed 30 million passengers through Heathrow. Using CGI animation and on-location filming, you'll see the stu...