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| Russian | English |
| расширительная камера | expansion tank (An expansion tank or expansion vessel is a small tank used to protect closed water heating systems and domestic hot water systems from excessive pressure. The tank is partially filled with air, whose compressibility cushions shock caused by water hammer and absorbs excess water pressure caused by thermal expansion. WAD) |
| расширительная линия | expansion line |
| расширительная цистерна | expansion tank (на танкере) |
| расширительно это стало означать | by extension the word has come to mean |
| расширительное соединение | expansion joint |
| расширительный бачок | receiver (автомобильного кондиционера) |