Bridge crane ndi zida zonyamulira zomwe zimagwiritsidwa ntchito kwambiri m'mafakitale, zomangamanga, doko ndi malo ena. Mapangidwe ake ndi awa: Bridge Girder Main Girder: Gawo lalikulu lonyamula katundu la mlatho, lomwe limadutsa pamalo ogwirira ntchito, lomwe nthawi zambiri limapangidwa ndi chitsulo, chokhala ndi mphamvu zambiri ...
Werengani zambiri