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| nuclear-radiation technique (напр., определения плотности грунта) | |||
| radioisotope method (измерения расхода воды) | |||
| tracer technique; radionuclide method | |||
| radio-active tracer method | |||
| radioisotope technique | |||
| радиоизотопный метод: 8 phrases in 4 subjects |
| Hydraulic engineering | 3 |
| Makarov | 2 |
| Oilfields | 1 |
| Technology | 2 |