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日本工业技术院计量研究所开发出用激光测量30km以上的远距离时误差只有几毫米的新技术。迄今的激光测量由于空气的波动和温度无法修正,故只能测量5～6km的距离。新系统为测出空气
Japan Institute of Metrology Institute of Metrology developed a laser with a distance of 30km or more when the error of only a few millimeters of new technology. Since the laser measurement can not be corrected due to fluctuations in the air and temperature, it can only measure the distance of 5 ~ 6km. The new system is for measuring air