So study on modern urban green space system layout is full of multiple realistic meaning.

因此研究现代城市绿地系统布局多元化具有多重的现实意义.

Piping preinstallation in China Experimental Fast Reactor (CEFR) was realized by 3D software simulation to find out and resolve the problems in the process of system layout and installation.

利用三维软件模拟设备及管系，在计算机上实现设备和管系的预安装，提前发现并解决中国实验快堆工程系统布置和安装过程中存在的问题。