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| checking floor hinge; concealed-in-door closer | |||
| 地垄: 33 phrases in 11 subjects |
| Agriculture | 10 |
| Business | 4 |
| China | 1 |
| Desert science | 5 |
| Earth sciences | 2 |
| Economy | 1 |
| Hydroelectric power stations | 1 |
| Law | 1 |
| Securities | 1 |
| Technology | 6 |
| Textile industry | 1 |
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