Malinga ndi mfundo zake zochepa zokolola, zitsulo structural kwa mbale sitima, ndiye structural zitsulo kwa hull, lagawidwa m'magulu otsatirawa mphamvu: ambiri-mphamvu structural zitsulo ndi mkulu-mphamvu structural zitsulo.Sitima yapamadzi imatanthawuza mbale yachitsulo yotentha yopangidwa mu ...
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