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| 整治技术改造工程 | |||
| 改良工程 | |||
| 整治设施; 整治工程; 改善工程; 技术改造工程 | |||
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| 改建工程 | |||
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improvement works : 8 phrases in 6 subjects |
| Business | 1 |
| Economy | 2 |
| Hydroelectric power stations | 2 |
| Name of organization | 1 |
| Technology | 1 |
| Textile industry | 1 |
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