| 項目 |
英語 |
| MATV | master antenna television |
| MCB | miniature circuit breaker |
| MCCB | molded-case circuit breaker |
| MCM | M circular mils |
| MD | motor damper |
| MDF | main distribution frame |
| MDジョイン卜 | mechanical drainage joint |
| MHD発電 | magnet hydrodynamics power generation |
| MIケーブル | mineral insulated cable |
| MLSS | mixed liquor suspened solids |
| MLVSS | mixed liquor volatile suspended solids |
| MPEG | moving picture expert group |
| MRT | mean radiant temperature |
| MSDS | material safety data sheet |
| MTBF | mean time between failures |
| Mアルカリ度 | M-alkalinity |
| Mバー | M shape bar |