花岗岩研究还必须与区域地质研究紧密结合。
The study of granite must also be closely linked with the study of regional geology.
因此，在19世纪，区域地质研究本身就可形成一种有价值的研究；
Thus, in the nineteenth century, local geological studies represented worthwhile research in their own right;
其研究既具有区域地质研究的理论意义，也具有油气勘探的实践意义。
The studies for the characteristics of transtensional basin are of importance beth in regional geology and oi…
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