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| 检修孔 | |||
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| 检修孔口; 接近孔为便于检查和调整工具接近而开设的孔; 检视孔; 入口; 检修视孔 | |||
| 人口; 检修窗 | |||
| 检修孑 | |||
| accessing opening: 1 phrase in 1 subject |
| Electric machinery | 1 |
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