multiple rocket launcher 
Montana Rail Link 
Material Requirements List 
Materiel Requirements List 
Medical Research Laboratory 
minimum risk level 
MATRAL 
Maximum Residue Limit 
Madras Refineries Limited 
Manipulator Retention Lock 
manual retention latch 
Master Requirements List 
Materials Research Laboratories 
Materials Research Laboratory 
maximum residue level 
maximum residue levels 
method reporting limit 
minimal risk level 
minimal risk levels 
Aeromorelos 
Machine Representational Language 
Maggi-Righi-Leduc 
magnetic resonance lymphography 
Maintenance Requirement List 
Malaria Reference Laboratory 
Manipulator Retention Latches 
Manufacturing Readiness Level 
Manufacturing Reference Line 
MARINE DRILLING COMPANIES, INC. 
Marine Research Laboratory