如果有人对你说,火箭群可在手掌上发射,你一定会把它当成梦呓。可是这却是真实的。据英国《新科学家》杂志报道,美国洛杉矶空军基地某试验室的科研人员正在研究一种超微型火箭,它们的尺寸不到2mm。那么小的火箭干什么用?专家说,它的用途可大着呢!甚至会引发一场卫星使用方面的革命。今天的各种卫星巨大而昂贵,如常 If someone says to you that a rocket cluster can be launched on the palm of your hand, you will surely think of it as a dream. But this is true. According to a report by the British “New Scientist” magazine, researchers at a laboratory in Los Angeles Air Force Base are studying a type of ultra-miniature rockets that are less than 2mm in size. What’s the use of a small rocket? Experts say it can be used for a long time! It may even lead to a revolution in the use of satellites. Today’s various satellites are huge and expensive, as usual