 |
| |||
| net-to-gross sand ratio (Alexander Demidov) | |||
| net sand coefficient; gross sand ratio (dimock) | |||
| net to gross (MichaelBurov) | |||
| net sand (June Monthly Business Letter); net/gross ratio (NTG) | |||
| NTG | |||
| net-to-gross ratio; sand fraction | |||
| коэффициент песчанистости: 4 фразы в 3 тематиках |
| Геофизика | 2 |
| Нефтепромысловый | 1 |
| Сахалин | 1 |