English abbreviations from mtr to mtt
- MTR (Mobile Test Rig (US))
- MTRCB (Movie and Television Review and Classification Board (Philippines))
- MT RD (Mount Road)
- MTRN (Midnight Trucking Radio Network)
- MTRR (Magnetic Tape Recorder-Reproducer)
- MTS (Maintenance Training System)
- MTS/SOF-IRIS (Multifunction System)
- MTSC (Militia Training Support Center)
- MTSL (Michigan Team Swim League)
- MTSP (Maintenance Test Support Package)
- MTSQ (mechanical time and super-quick)
- MTSS (Military Training Service Support)
- MTT (Methylthiazol tetrazolium (assay))