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Terms for subject Technology containing unsupported back | all forms | exact matches only | in specified order only
| English | Chinese |
| unsupported back | 未支护顶板 |
| unsupported back span | 无支护顶板跨度 |
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| English | Chinese |
| unsupported back | 未支护顶板 |
| unsupported back span | 无支护顶板跨度 |