The English translation given on Uniformi Insignia and on the Romanian Armed forces website for these technical ranks is Warrant Officer. However unlike most armies where WOs outrank NCOs, the WO ranks appear to have NCO equivalents as described in the NATO report below:
www.nato.int/ims/2005/win/national_reports/romania.pdf
Chief Warrant Officer - Sergeant Major
Warrant Officer 1st Class - Master Sergeant
Warrant Officer 2nd Class - Sergeant 1st Class
Warrant Officer 3rd Class - Staff Sergeant
Warrant Officer 4th Class - Junior Staff Sergeant
Warrant Officer 5th Class - Sergeant
Is it therefore accurate to describe Maistru Militar as Warrant Officers?