The Cavity-Autoscanning Laser System (C-ALS) has the features of automatic scanning, easy operation and simple data processing, and the detection personnel do not need to enter the cavity.
采空区三维激光扫系统(C -ALS)具有全自动扫描、操作方便、数据处理简单等特点，同时探测人员无须进入空区。
The Cavity-Autoscanning Laser System (C-ALS) has the features of automatic scanning, easy operation and simple data processing, and the detection personnel do not need to enter the cavity.
采空区三维激光扫系统(C -ALS)具有全自动扫描、操作方便、数据处理简单等特点，同时探测人员无须进入空区。
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