 |
| |||
| 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 фрази в 3 тематиках |
| Геофізика | 2 |
| Нафтопромисловий | 1 |
| Сахалін | 1 |