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Link to Subject Category
Mach meters - 06
machine elements - 37
machine learning - 63
machine processes - 37
machinery - 37
machining - 37
macrometeorology - 47
macromolecular crystallography (space processing) - 29
Magellanic clouds - 90
maglev vehicles - 85
magnetic field effects (biological, animal and plant) - 51
magnetic field effects (human) - 52
magnetic field effects - 55
magnetic sails - 20
magnetism (extraterrestrial) - 90
magnetism (terrestrial) - 46
magnetism - 70
magnetogasdynamics - 75
magnetohydrodynamic (MHD) energy conversion device - 44
magnetohydrodynamic (MHO) power sources - 20
magnetohydrodynamic (MHO) thrusters - 20
magnetohydrodynamics - 75
magnetoplasmas - 75
magnetosphere (Earth) - 46
magnets (electrical, electronics application) - 33
main propulsion system components (spacecraft) - 20
main propulsion systems (spacecraft) - 20
mainframes - 60
maintainability (procedures and theory) - 38
maintenance (aircraft) - 01
maintenance (spacecraft) - 12
maintenance facilities (aircraft) - 09
maintenance facilities (space based, ground based) - 14
management planning - 81
management research - 81
management tools - 81
management - 81
maneuvering (aircraft) - 08
maneuvering (spacecraft) - 18
man-machine communications (aircraft) - 04
man-machine communications (spacecraft) - 17
man-machine communications (theory and techniques) - 32
man-machine systems - 54
manned flights (space exploration) - 91
manned lunar exploration - 91
manned maneuvering units - 54
manned Mars missions - 91
manned orbital laboratories - 18
manned planetary exploration - 91
manned space flight network - 17
manned spacecraft - 18
man-system interfaces - 54
manuals (refer to appropriate category for manuals) - 82
manufacture of propellants - 28
manufacturing processes - 37
many-body problems - 70
mapping - 43
marine biology - 48
marine resources - 48
marketing predictions - 83
marketing research - 83
Markov processes - 65
Mars exploration - 91
martingales - 65
masers - 36
mass spectrometers - 35
mass spectroscopy (application) - 25
mass transfer - 34
mass transportation - 85
materials (general) - 23
materials fabrication - 37
materials forming - 37
materials handling - 37
materials manufacturing - 37
materials processing in space - 29
materials separation in space - 29
mathematical analysis - 64
mathematical logic - 67
mathematical modeling (systems analysis) - 66
mathematical programming - 66
mathematical sciences (general) - 59
mathematical theories - 67
matrices - 64
maximum likelihood estimation - 65
measuring instruments - 35
mechanical computers - 60
mechanical drawing - 82
mechanical engineering - 37
mechanical equipment - 37
mechanical properties (composite materials) - 24
mechanical properties of alloys - 26
mechanical properties of metals - 26
mechanical properties of nonmetallic materials - 27
mechanical properties of propellants and fuels - 28
mechanics (practical) - 37
mechanics (theory and analysis) - 70
memory devices (computer) - 60
mental adaptation to flight - 53
mesh refinement (mathematics) - 64
mesons - 77
metal based propellants and fuels - 28
metal crystals - 26
metal filament systems - 24
metal forming - 37
metal matrix composites (MMC) - 24
metallic fibers - 26
metallic materials - 26
metallography - 26
metallurgy - 26
metals - 26
meteorite protection - 18
meteorites - 91
meteoroids (observation) - 89
meteoroids - 91
meteorological anomalies - 47
meteorological parameters - 47
meteorological satellite studies - 47
meteorological satellites - 18
meteorological sounding rocket studies - 47
meteorology - 47
meteors (observation) - 89
meteors - 91
metrication - 31
metrology - 31
MHD generators - 75
microbiology - 51
microbursts - 47
microcircuits - 33
microcomputers - 60
microelectronics - 33
microfiche techniques - 82
micrography - 82
microgravity (space processing) - 29
microgravity effects (biological, animal and plant) - 51
microgravity effects (human) - 52
micromachining - 37
micrometeoroid sensors (instrumentation) - 35
micrometeoroid sensors (spacecraft) - 19
micrometeorology - 47
microminiaturization - 33
microscopes - 35
microstructure of welded joints - 26
microwave communications systems (aircraft) - 04
microwave communications systems (applications) - 32
microwave communications systems (spacecraft) - 17
microwave energy conversion devices - 44
microwave energy transmission - 44
microwave interaction with plasmas - 75
Microwave Landing System (MLS) - 04
microwave radiation (properties) - 32
microwave receivers (aircraft) - 04
microwave receivers (spacecraft) - 17
microwave receivers (theory and techniques) - 32
microwave techniques - 32
microwave theory - 32
microwave transmitters (aircraft) - 04
microwave transmitters (spacecraft) - 17
microwave transmitters (theory and techniques) - 32
mineral deposits - 43
minerals (petrology) - 42
minicomputers - 60
minimax techniques - 65
mirror interference (optics) - 74
mirror machine (plasma physics) - 75
missile aerodynamics - 02
missiles (performance) - 08
mission planning (space) - 12
mixing of gases - 34
mixing of liquids - 34
mobile lunar laboratories - 14
mobile planetary laboratories - 14
mobile transporters - 14
model order reduction (control theory) - 63
models (aircraft) - 05
models (spacecraft) - 18
modems - 60
modulation (optics) - 74
modulation (signals) - 32
modulators (electric, electronic devices) - 33
molecular beams - 72
molecular collision theory - 72
molecular energy - 72
molecular interactions - 72
molecular physics - 72
molecular properties - 72
molecular spectra - 72
molecular spectroscopy - 72
molecular structure - 72
momentum transfer (particle interactions) - 77
monopropellants - 28
monsoons - 47
Monte Carlo method - 65
moons (characteristics and composition) - 91
moons (observation) - 89
Mossbauer effect - 76
motion sickness - 52
mounts (supports) - 37
multigrid methods - 64
multimode sensors - 35
multiphase flow - 34
multiphase materials processing in space - 29
multiprocessors (hardware) - 60
multispectral band scanners (remote sensing applications) - 43
multispectral sensors - 35
multistage launch vehicles - 15
multistage rockets - 20
multivariable control - 63
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