Txuj ci kev lag luam
1. Lub luag haujlwm ntawm cov ciav hlau
Taug qab cov bolts yog qhov tseem ceeb uas txuas kev tsheb ciav hlau thiab muaj peev xwm txhim kho cov ciav hlau thiab lwm yam kev tsheb ciav hlau thaum khiav ntawm kev kub ceev.
2. hom kev taug qab bolts
(1) {{{1} T-hom trail Bolts: feem ntau yog siv los txuas cov ntsia hlau thiab cov nplhaib sib tw, hnyav-railways.
(2) {{{{. v-hom track bolts: feem ntau yog siv hauv nroog ciav hlau hloov chaw thiab cov ciav hlau loj thiab cov ciav hlau {4}
(3) {{{{. qib track bolts: feem ntau yog siv rau txuas cov kev txuas thiab tsheb ciav hlau, kev lag luam thiab mining railways.
3.} cov khoom siv ntawm track bolts
Track bolts feem ntau yog ua los ntawm cov roj carbon hlau thiab cov txheej txheem alloy yog qhov tsim nyog rau kev sib tw thiab cov kev teeb tsa hnyav, nws yog qhov tsim nyog yuav ua kom nruj raws cov qauv kev tsheb ciav hlau {}}
Hauv ntej, taug qab bolts yog qhov tseem ceeb ntawm kev siv tsheb ciav hlau thiab kev ruaj ntseg ntawm kev nyab xeeb thiab kev ruaj ntseg ntawm kev tsheb ciav hlau.
Ntxiv rau txoj kev taug qab bolts,Gnee RailKuj tseem muaj cov khoom lag luam nrawm xws li cov tshuaj ntxuav, ceev, txuag lub sijhawm ua ke kom tau raws li cov neeg siv khoom sib txawv, uas yooj yim}}
