Los ntawm hom tsheb
Cov log tsheb tau muab cais los ntawm hom tsheb thiab tuaj yeem faib ua 8 hom. uas yog:
PCR - tsheb log tsheb;
LTB - lub teeb tsheb log tsheb;
TBR - tsheb thiab tsheb npav log tsheb;
AGR - tsheb ua liaj ua teb;
OTR - engineering tsheb log tsheb;
ID - muaj tsheb log tsheb;
AC - aircraft log tsheb;
MC - maus taus log tsheb.
