Synchronous lifting hydraulic system e kentsoeng molemong oa ho phahamisa girder box box

The synchronous lifting hydraulic system e sebelisoa bakeng sa ho phahamisa ka mokhoa o ts'oanang oa girder ea lebokose kahong ea borokho. Thapo ea tšepe e phahamisoa ke jack ea tšepe ea hydraulic ho phahamisa girder ea lebokose la tšepe ka kakaretso.