88 images 23 classes
by xiaoyang 123
1948 images 10 classes
by vaidik
1426 images 203 classes
object A mold is installed on a temporary building A pile of H-beams is located on soil A pile of molds is located on a temporary building A pile of molds is located on soil A pile of rebars is located on soil A pile of wood bars is located on soil A worker is located on a foundation A yellow excavator is located on soil A yellow tower crane is located on concrete, An orange exca Black Crane Truck Black Dump Truck Black Dust Protection Black Excavator Black Excavators Blue Concrete Truck Blue Crane Blue Crane Truck Blue Drilling
by Tongji Uni
1880 images 6 classes