The main problems are fluid flow and elemental transportation, the fluid rock interaction and the source of the fluid.

研究的主要问题是流体流动机制和元素迁移，流体-岩石相互作用和流体来源。

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Studies of petrology and elemental geochemistry indicate that the Xiangshan uranium ore-field dacite porphyry belongs to intra-plate shoshonitic rock type and is a kind of shoshonitic dacite porphyry.

岩石学、元素地球化学研究表明，相山铀矿田的英安斑岩属于板内型钾玄质岩类，为钾玄质英安斑岩。

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Soil culture experiment and frame experiment were carried out to study effects of application of elemental sulfur and phosphate rock.

本文通过土壤培养和框栽试验，探讨了硫磺与磷矿粉配合施用肥效方面的问题。

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