1. Excavator powonekera ntchito 1, Earthwork: Excavators angagwiritsidwe ntchito chitukuko cha dziko lapansi, kusanja pansi, roadbed pofukula, dzenje backfilling ndi ntchito zina.Zomangamanga zapadziko lapansi ndizovuta, ndipo zambiri mwazo ndi ntchito zotseguka, zomwe zimakhudzidwa ndi nyengo, hydrology, geology, komanso zovuta kudziwa ...
Werengani zambiri