sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Closed Ecological Life Support Systems | *** |
| controlled ecological life-support system | ** |
| Controlled Ecomological Life-Support System | ** |
| Controlled-Ecological-Life-Support-System | ** |
| controlled-environment, life-support system | ** |
| NASA-Controlled Ecological Life-Support Systems | ** |
| Controlled Environment Life Support System | ** |
| Closed Environment Life Support System | ** |
| Closed Environment Life Support Systems | * |
| Coastal Ecological Landscape Spatial Simulation | * |
| Closed Ecology Life Support Systems | * |
| Controlled Environment Life Support Systems | * |