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| 马达操作活门; 马达驱动阀 | |||
| 电动阀 | |||
| 电动阀 (门) | |||
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| 电动门 | |||
| 电动阀 | |||
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motor operated valve : 5 phrases in 2 subjects |
| Aviation | 1 |
| Electronics | 4 |
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