mantle of rock

• 风化岩,岩石表层,表皮岩

mantle of rock的用法和样例：

例句

1. Weathered rock is the predecessor of saprolite and is mainly made of corestones surrounded by saprolite crust.
   土层可贮存上层滞水，风化岩带则可赋存潜水或承压水。