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| 敞坑 | |||
| 明堑; 明基坑 | |||
| 露天矿从地表通过向下阶梯剥离开采金属矿、煤及其他非金属等矿床的作业形式 | |||
| 明挖 | |||
| 露天开挖; 明开挖 | |||
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open excavation : 7 phrases in 4 subjects |
| Engineering geology | 1 |
| Hydroelectric power stations | 3 |
| Rail transport | 1 |
| Technology | 2 |
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