4d construction - janda slot 4d rtp
$800.00
The 4D BIM construction technology increases the dimension of time based on the 3D model so that the entire construction process can be expressed dynamically and thus be more intuitive. The 4D theory was first proposed by Stanford University in 1996, and the CIFE 4D-CAD system was developed on this basis [ 17 ]. no sgp 4d