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| Subject | English | Russian |
| gen. | trial-and-error choice | подбор ("Trial and error" choice of blood pressure medicine poses challenge. USA Today. | The general design approach, once materials are tentatively selected, is trial -and -error choice of tooth numbers which must satisfy the speed ratio limits and .. Alexander Demidov) |
| gen. | trial-and-error choice of the number of | подбор числа (Trial-and-error choice of number of particles and release times can perhaps overcome the apparent nonlinearity Alexander Demidov) |