placer deposit
短語(yǔ)詞組
- placer r deposit 砂積礦床
- placer gold deposit 砂金礦床
- the placer gold deposit 砂金礦體
- aeolian placer deposit 風(fēng)成砂礦床
- offshore placer deposit 近海砂礦
- quarternary placer deposit 第四紀(jì)砂礦床
- eluvial placer deposit 殘積砂礦床
- alluvial placer deposit 沖積砂礦床 返回 placer deposit