Chav tsev uas cais cov khoom pib ua feem ntau yog hu ua cais, thaum cov tshuaj muaj pes tsawg leeg ntawm cov kua tsis hloov. Xws li ib tug apparatus yog siv nyob rau hauv cov zaub mov, tshuaj, automotive teb. Lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm lub tshuab cais yog tib yam, tab sis nws cov qauv tsim yuav txawv. Kawg hloov kho: 2024-01-07 14:01