spot area measurement 斑点面积测定
The spot measurement: the designer goes to the spot to measure the area and position of the room wall, heating system, doors and Windows.
现场测量：设计师到施工现场实地测量，包括房间墙壁面积、门窗暖气面积及位置。
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The detection method is described and it has been applied to measurement of spot area.
在文中叙述了其检测方法并用于求取光斑的面积。
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