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沼铁矿 zhǎotiěkuàng
gen. limnite; marsh-ore; morass-ore
met. bog iron ore; brown ore; meadow ore; morass ore; swamp ore
oil lake ore
tech. bog mine ore; bog ore; marsh ore
铁矿
oil meadow ore
沼 铁 矿: 1 phrase in 1 subject
Technology1