Thaum nws los txog rau cov ntawv thov kev lag luam, qhov tseem ceeb ntawm cov ntaub ntawv zoo tsis tuaj yeem overstated. Tooj, tshwj xeeb, tau ntev tau muaj nuj nqis rau nws cov khoom siv hluav taws xob zoo heev, kev tiv thaiv corrosion thiab ductility. Thaum nws los txog rau pwm, cov khoom no ua rau tooj liab zoo tagnrho ch...
Nyeem ntxiv