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open pit mining
econ. 露天开采
tech. 露天采矿; 开矿
open-pit mining
agric., chem. 露天采矿; 露天开采
expl. 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
open pit mining: 7 phrases in 3 subjects
Earth sciences1
Oil / petroleum1
Technology5

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