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人类从大约五十万年以前开始知道用火,到大约两万年前开始使用弓箭,驯养动物,栽培作物,其间经历了一个漫长的历史过程。可是到了今天,现代科学技术的进步和发展,在短短的十年多时间里,就可以把世界改变得面目全非。有人曾作过粗略的统计和推测,认为在最近十年里,科学技术的发明与发现比过去两千年的总和还更多,而未来的十年比现在的十年又将翻一番.新技术从发明到实际应用的平均周期,已从十九世纪的五十年缩短为十年甚至五年.如果说蒸汽机的这一过程整整花去八十年之久,那么激光器则仅仅用了两个月的时间.现今世界上的全部科研成果,有一半是近十五年取得的。据统计,全世界从事科学研
From about half a million years ago, humankind learned to use fire and began to use bows and arrows, domesticated animals and cultivated crops about 20,000 years ago, during which time it took a long historical process. However, up to today, with the progress and development of modern science and technology, it has been possible to change the world beyond recognition in more than a decade. Someone once made rough statistics and speculations that the invention and discovery of science and technology have more in the last ten years than the sum of the past two millennia and will double in the coming decade over the current decade. The average cycle time from invention to actual use has been reduced from five decades in the nineteenth century to ten or even five years.If this process of a steam engine took eighty years to complete, the laser used only two For a month, half of all scientific research in the world today has been made in the past fifteen years. According to statistics, the world engaged in scientific research