Q: Dab tsi tseem ceeb breakots propelled txhuas rau hauv kev siv cov kev siv cov ntsiab?
A: Cov neeg ua haujlwm qub siv Alum (Alum sulfate) rau cov txheej txheem dyeing, tab sis ntshiab txhuas cov txheej txheem kom txog rau 1825. Cov nqi pheej yig los ntawm 80%. WWII tau txais kev xav tau rau lub dav hlau lub dav hlau, nrog cov bombers zoo li b {4}} siv 90% siv 90%. Lub xyoo 1950 sawv ntsug Txhuam Planning Hloov Hlau, Tawm Tsam Los Ntawm Kev .. Chaw Muaj Hnub Nyoog Alloys (piv txwv li, 6061) Siv Lub Sij Hawm Moonsions. Xyoo 1970 ua dua tshiab hnav tsoosented Aluminium lub koob npe nrov hauv eco. Kev nce qib niaj hnub suav nrog nano-coated txhuas rau qhov chaw ntawm tus kheej. Niaj hnub no, thoob ntiaj teb ntau dhau 65 lab metric tons ib xyoos twg. Txhua tus leap hauv technology nthuav tawm txhuas lub luag haujlwm los ntawm cov khoom khoom kim heev rau kev lag luam staple.
