Lub ntiaj teb ntawm kev siv tshuab vuam yog qhov loj thiab txuas ntxiv mus. Ntawm cov txheej txheem vuam ntau yam, qhov chaw vuam yog ib txoj kev siv dav rau kev koom nrog cov khoom siv hlau hauv ntau qhov kev lag luam, suav nrog tsheb, aerospace, thiab hluav taws xob. Yuav kom ua tiav qhov tseeb thiab ua tau zoo ntawm qhov chaw vuam, lub co...
Nyeem ntxiv