短語(yǔ)詞組短語(yǔ)parent -rock 成土母質(zhì)parent t rock 母巖combination of parent -rock 母巖組合parent rock horizon 母質(zhì)層ore forming parent rock 礦母巖parent rock types 母巖類型the parent rock 母巖purple parent rock 紫色母巖mineral parent rock 礦質(zhì)母巖 返回 parent rock