短語(yǔ)詞組短語(yǔ)iron -sand 鑄鉄砂iron coated sand 塗鉄砂cubic iron ore sand 立方躰狀鉄鑛砂marine iron ore sand dredger 海上鉄鑛砂開(kāi)採(cǎi)船Low - iron silica sand 低鉄矽砂magnetic iron sand 磁鉄鑛砂iron sand deposit 鉄沙鑛iron sand tailing 鉄砂尾鑛 返回 iron sand