| Abbreviation | Definition |
|---|---|
| PHWR | Pressurized Hot Water Return |
| PKS | Parallel Kinematic Structure |
| PMCC | Power Cum Motor Control Centers |
| PMSM | Permanent Magnet Synchronous Motor |
| PMT | Physical Modeling Test |
| PNEL | Personal Noise Exposure Level |
| PNG | Piped Natural Gas |
| PNRUITMO | Petersburg National Research University of Information Technology, Mechanics and Optics |
| POVO | Power Off Valve Opens |
| PRISM | Pressure Reactive Intelligent Spark Management |
| PRV | Pressure Relief Valve |
| PTW | Pneumatic Torque Wrenches |
| PWT | Powertrain |
| QBMO | Quadruple Base Mechanism of Creation (QBM-O)- The GOD'S Heart of Mathematical Operating System of Cr |
| QMCS | Quantum Mechanics Conceptual Survey |
| QPO | Quasi Periodic Oscillation |
| R&O | Rust and Oxidation |
| R&R | Remove and Replace |
| RACER | Revitalizing Auto Communities Environmental Response |
| RAPC | Radiology Associates P C |