This subject applies AET to safety assessment of crane beam first, so extend the application area of AET.
本课题首次将声发射监测技术应用于起重机梁的安全评价，从而扩展了声发射技术的应用领域。
Main task of our subject is to detect the incident laser beam. And it is required to get its wavelength and incident angle.
本课题的主要任务是对制导激光束的探测，要求能够计算出入射激光的波长和入射角。
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