placer deposit
短语词组
- placer r deposit 砂積鑛牀
- placer gold deposit 砂金鑛牀
- the placer gold deposit 砂金鑛躰
- aeolian placer deposit 風成砂鑛牀
- offshore placer deposit 近海砂鑛
- quarternary placer deposit 第四紀砂鑛牀
- eluvial placer deposit 殘積砂鑛牀
- alluvial placer deposit 沖積砂鑛牀 返回 placer deposit