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| 齿轮式变速器 | |||
| 齿轮传动齿轮传动是一种应用十分广泛的机构传动。按工作条件划分，齿轮传动可以分为闭式齿轮传动和开式齿轮传动。将齿轮封闭在箱体内的传动称为闭式齿轮传动，将齿轮裸露在空气中的齿轮传动称为开式齿轮传动 | |||
| 齿轮传动 | |||
| gear transmission: 90 phrases in 12 subjects |
| Agriculture | 3 |
| Air defense | 1 |
| Automobiles | 20 |
| Drilling | 4 |
| Metallurgy | 1 |
| Nautical | 1 |
| Oil / petroleum | 5 |
| Rail transport | 4 |
| Shipbuilding | 5 |
| Technology | 43 |
| Telecommunications | 1 |
| Wind Energy | 2 |
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