I often need a quick graphical representation of vacant areas in a building, or vacant buildings on a site.

我经常需要在现场快速的图形化展示建筑中的空闲面积，或空闲的建筑。

youdao

I often need a quick graphical representation of vacant areas in a building, or vacant buildings on a site.

我经常需要在现场快速的图形化展示建筑中的空闲面积，或空闲的建筑。

youdao