Milatho
Kuwonongeka kwa dzimbiri kungayambitse ndalama zambiri mu mlatho, chifukwa chake malo omwe amasunga 50% RH mozungulira ndi ofunikira kuti asawonongeke pomanga zitsulo pomanga mlatho.
Zogwirizana nazo:(1).(2)
Chitsanzo cha kasitomala:
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New Jinggangshan Bridge