短語詞組短語rock -salt structure 巖鹽結(jié)搆rock salt rkx 鹽巖rock salt ores 巖鹽鑛rock salt interlayer 鹽巖夾層layered rock salt deposit 層狀巖鹽鑛牀Rock salt cavern 巖鹽溶液 返回 rock salt