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| 操作器，控制器机械手 | |||
| 机械手 | |||
| 机械手 (臂); 机械臂 | |||
| mechanical arm: 6 phrases in 4 subjects |
| Automobiles | 1 |
| Metallurgy | 1 |
| Space | 2 |
| Technology | 2 |
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