Pepala la denga

  Pepala la dengaidapangidwa ku United States m'ma 1930.Kumayambiriro kwa zaka za m'ma 1980, Wuhan Iron ndi Steel ndi Baosteel adayambitsa mizere yopangira zitsulo zokhala ndi utoto.Kuyambira nthawi imeneyo, dziko langa layamba kugwiritsa ntchito mapanelo okhala ndi utoto wopaka utoto ku nyumba zamafakitale, monga Shandong Master Plant, National Cotton ndi Grain Warehouse, Zomera m'malo osiyanasiyana achitukuko, ndi zina zambiri. tekinoloje, kuchuluka kwa ntchito kukupitilira kukula ndipo mlingo ukupitilirabe.

Polowa m'zaka za zana la 21, chuma cha dziko langa chatukuka mofulumira komanso mokhazikika.Matayala okhala ndi utoto wamitundumitundu alowanso m’nyumba zazikulu za anthu kulikonse kuchokera m’nyumba za mafakitale wamba, monga ngati mabwalo a ndege, masiteshoni a njanji, mabwalo amasewera, maholo ochitirako konsati, ndi mabwalo akuluakulu a zisudzo.Mu 2008 malo Olympic.Denga, pansi ndi khoma la nyumbayo zimatengera mtundu wa mbale wokhala ndi kupsinjika koyenera komanso kulumikizana, ndipo njira yomanga ndi yasayansi komanso kukana kwa dzimbiri kumakhala kolimba.Aluminiyamu-zinki mbale, zitsulo zotayidwa-magnesium-manganese aloyi mbale, titaniyamu aloyi mbale, zitsulo zosapanga dzimbiri, etc. Kafukufuku ndi chitukuko kwambiri bwino ntchito luso mlingo wa subtype zitsulo mbale.