Akwa akwa
Nbibi mmebi nwere ike iduga nnukwu ụgwọ na akwa mmiri, ya mere, gburugburu ebe obibi nke na-edebe ihe kachasị 50% RH gburugburu dị mkpa maka mgbochi corrosion nke ihe owuwu ígwè na-arụ ọrụ n'ime mmiri.
Ngwaahịa ndị emetụtara:(1).(2)
Ọmụmaatụ onye ahịa:
New Jinggangshan Bridge
