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English | Chinese |
Keeping this in view, field investigations were conducted at a phosphate mine to study the flyrock from blasting | 鉴于这一点、为了研究爆破飞石、我们在挨着居民区的磷矿作了实地考察 |
mine field development | 井田开拓由地表进人煤层为开采水平服务所进行的井巷布置和开掘工程 |
open-cast mine field | 露天矿田划归一个露天矿开采的矿床或其一部分 |
surface mine field | 露天矿田划归一个露天矿开采的矿床或其一部分 |
topographic rnap of mine field | 矿田区域地形图反映矿田范围内地貌和地物的平面图 |