This paper reviews geochemical characters, distribution, modes of occurrence and migration of Ni in coal.

本文综述了镍的地球化学特征，以及煤中镍的分布、赋存状态与迁移规律。

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Reviews the current situation of the geochemistry characteristics, distribution, modes of occurrence, mechanism of concentration, migration of chromium in coals.

对煤中铬的地球化学行为、分布、赋存形式、富集机理、迁移规律等方面的研究现状进行了综述。

youdao

Reviews the current situation of the geochemistry characteristics, distribution, modes of occurrence, mechanism of concentration, migration of chromium in coals.

对煤中铬的地球化学行为、分布、赋存形式、富集机理、迁移规律等方面的研究现状进行了综述。

youdao