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| зубчатые колеса, находящиеся в постоянном зацеплении | |||
| зубчатая передача постоянного зацепления; шестерня постоянного зацепления | |||
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常啮合齿轮 : 4 phrases in 3 subjects |
| Automobiles | 1 |
| General | 2 |
| Technology | 1 |
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