煤沼沉积环境可归纳为八种类型、四种有机相。

The sedimentary environment of coal swamp can be classified into eight types and four organic phases.

youdao

煤沼沉积环境可归纳为八种类型、四种有机相。

The sedimentary environment of coal swamp can be classified into eight types and four organic phases.

youdao