Daim ntawv thov cov chaw ntawm hexagon qhov muag bolts bolts

Cov Khoom Siv Neeg Kho Txhua Yam: Siv rau cov kev sib dhos thiab ua kom yooj yim ntawm ntau yam khoom siv txhua yam.
Cov tsheb tsim khoom lag luam: siv rau kev siv nrawm dua ntawm cov khoom xws li tshuab, chassis, thiab cov tshuab nres.
Aerospace: siv rau cov qauv sib txuas ntawm cov dav hlau thiab lub nkoj.
Kev tsim kho thiab pej xeem engineering: siv rau kev sib txuas thiab nrawm nrawm ntawm cov vaj tse muaj kev nce siab thiab txuas ntxiv.
Cov khoom siv hluav taws xob: siv rau cov kev sib dhos thiab nrawm ntawm cov txiag hluav taws thiab hluav taws xob.
Cov rooj tog raug: siv rau kev ua kom yooj yim ntawm rooj tog zaum.
Cov kev ua si ua si thiab cov khoom sab nraum zoov: siv hauv cov khoom xws li cov khoom nce pob zeb, tsheb kauj vab, thiab khau nees. ‌