树脂，自然沥青某种自然的沥青，如矿石沥青或树脂。

Any of various natural bitumens, such as mineral pitch or asphalt.

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树脂，自然沥青：某种自然的沥青，如矿石沥青或树脂。

Any of various natural bitumens, such as mineral pitch or asphalt.

youdao

质子探针分析表明，矿石中沥青的微量元素组成在不同矿区样品中是不同的，同围岩有紧密联系。

The proton probe analysis shows that the elementary composition of bitumen varies with various gold deposits, and is controlled by the composition of wall rocks.

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