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| worm gear actuator; worm-gearing | |||
| worm gear; worm gearing | |||
| worm gear drive mechanism; worm-wheel gearing | |||
| 蜗轮传动装置: 6 phrases in 5 subjects |
| Agriculture | 1 |
| Drilling | 1 |
| Electric machinery | 1 |
| Oil / petroleum | 1 |
| Technology | 2 |
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