有机化学的学习要遵循其内在的规律性，而有机化合物的结构、性质及其制备方法是学习的重点。
Studying organic chemistry, one should follow its internal laws. The structures, properties and preparations of organic compounds are the key points in the process of organic chemistry learning.
着重研究了在黄铜基体上无氰退镍液的化学组成及退镍的电解工艺规律性。
The chemical components of solution and the electrolysis technique in order to remove Nickel from brass basis without cyanide are investigated.
每一次的脉动和幔涌形成的金矿体都表现了各自的地球化学特征和元素组合特征，成矿微量元素在垂向上具有各自的规律性。
Gold ore bodies formed by every pulse and mantle-surge all show respective geochemical and element combination characteristics. Each mineralized trace element show regularity in vertical section.
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