环斑花岗岩具有若干岩石学的特征。

The rapakivi granites have a number of petrological peculiarities.

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环斑花岗岩是发育于前寒武纪的一种特殊岩石。

Rapakivi is a special rock in Precambrian.

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本文将从以下几方面进行讨论：秦岭环斑花岗岩的研究历史；

This paper will reply to the questions in these aspects: 1) the research history of the rapakivi granites in Qinling;

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