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| 钻孔照〔摄〕相机; 孔内摄像 | |||
| 井下照相记录仪 | |||
| 井内照相机 | |||
| 井下摄影仪; 钻孔照相机; 钻孔摄影仪; 钻孔孔壁摄影机 | |||
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borehole camera : 6 phrases in 2 subjects |
| Engineering geology | 2 |
| Technology | 4 |
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