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| 蜗轮蜗杆传动装置 | |||
| 蜗轮机构传动 | |||
| 蜗杆传动装置 | |||
| 蜗轮传动装置 | |||
| 涡轮传动 | |||
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| 蜗轮传动装置 | |||
| 蜗轮蜗杆装置; 蜗轮蜗杆传动; 蜗杆传动装置 | |||
| worm gearing: 5 phrases in 3 subjects |
| Nautical | 1 |
| Oil / petroleum | 1 |
| Technology | 3 |
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