1) открытие
2) отверстие; окно
3) просвет ( напр. между стойками станка )
4) зев ( напр. ключа ) ; раствор ( циркуля ) ; раздвиг; раскрытие ( напр. тисков )
5) ячейка ( склада )
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- air intake opening
- charging opening
- clear opening
- cored opening
- entrance opening
- exit opening
- guide opening
- inlet opening
- intake opening
- jaw opening
- jet opening
- oil discharge opening
- oil feed opening
- passage opening
- pluggable opening
- positive opening
- roll opening
- screen opening
- support opening
- threaded opening
- ventilation opening
- V-opening
- wrench opening
- wrench-receiving opening