Order number | Keyword | Co-occurrence frequency | Order number | Keyword | Co-occurrence frequency |
1 | Third line construction | 155 | 12 | museum | 8 |
2 | Industrial heritage | 124 | 13 | transform | 8 |
3 | Protection and reuse | 75 | 14 | Spatial form | 8 |
4 | Value evaluation | 20 | 15 | Chongqing | 7 |
5 | cultural heritage | 19 | 16 | Chengkun railway | 7 |
6 | Small three lines | 17 | 17 | cultural landscape | 6 |
7 | Panzhihua city | 14 | 18 | Yichang | 6 |
8 | Cultural and tourism integration | 12 | 19 | Three line spirit | 6 |
9 | Research review | 11 | 20 | Third-line enterprises | 6 |
10 | Industrial building heritage | 9 | 21 | Mianyang City | 6 |
11 | Industrial heritage corridor | 9 |
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