论文部分内容阅读
近十年来,光激射器(莱塞)在科学技术各部门用得越来越广。光激射器的射线有高度方向性,可用作隧道、桥梁、管道和地下铁施工。例如美国有一条铁路采用光激射器的经纬仪控制穿山机械,开挖两公里隧道,误差不超过15毫米。光激射器也可用作机车车辆信息自动读出,“自动司机”信息传送以及自动调整列车运行速度。如美国宾夕法尼亚铁路的一个车站利用光激射器抄车号,每年可节省50多万美元。
In the past decade, light lasers (LES) have been used more and more in all sectors of science and technology. Light lasers have a high degree of beam radiation can be used as tunnels, bridges, pipelines and subway construction. For example, in the United States, there is a railroad that uses a light theodolite to control the tunneling machinery and excavate a two-kilometer tunnel with an error of no more than 15 millimeters. Light lasers can also be used for automatic reading of rolling stock information, “automatic driver” messaging and automatic train speed adjustment. For example, a station on the Pennsylvania railway in the United States used a light-launcher to copy a car number, saving more than 500,000 U.S. dollars each year.