In the field of Compton scatter imaging, the problem of how to image a large-scale object is still not fully settled.

在现有的康普顿散射成像技术中，如何对大型物体进行成像的问题始终没有得到充分解决。

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The object spatial database stores the small-scale 2D object graph, object attribute data and multi-media data, large-scale object 3D data and so on.

目标空间数据库中存储有小比例尺二维目标图、目标属性数据以及多媒体数据、大比例尺目标三维视景数据等多种类型数据。

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They object to the building of a large-scale retail project which they said could damage town-centre shopping.

BBC: Public inquiry on John Lewis store is adjourned