English | Russian |
competent bed | пласт, способный выдерживать нагрузку (refers to bed which maintains its thickness when subjected to stress even though it undergoes bending: as opposed to incompetent beds, which flow and thus become thicker and thinner at certain points) |
competent refractor | выдержанный преломляющий горизонт |
competent sandstone | крепкий песчаник |