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| 准备工程 | |||
| 渠首工程; 掘进工程 | |||
| 进水口工程 | |||
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| 渠首〔进水口〕工程; 渠首构筑物; 拱顶石饰; 准备工作; 平巷掘进工作 | |||
| 渠首［工程］; 枢纽 | |||
| 头部动作 | |||
| 脑力劳动 | |||
| 渠首工程; 进水口工程 | |||
| headworks: 18 phrases in 3 subjects |
| Hydroelectric power stations | 5 |
| Technology | 12 |
| Textile industry | 1 |
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