OPENING

1. отверстие (для впуска и выпуска газа или жидкости) 2. канава 3. пора; щель 4. pl пустоты (в породе) 5. вскрытие месторождения - admission opening - air intake opening - air opening - channel opening - circulating opening - cleanout opening - clear opening - discharge opening - filling opening - fissure opening - flare opening - fracture opening - hook opening - inlet opening - opening of channel - opening of hole - roof opening - rotary table opening - screen pipe opening - string shoe opening - table opening - tank opening - telltale opening - throttle opening - water table opening - window opening