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| 操作部件; 控制部件; 操纵部件 | |||
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operating part : 2 phrases in 2 subjects |
| General | 1 |
| Project management | 1 |
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Add | The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Report an error
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