本文研究内容主要涉及正常脑组织的分类问题。
The research on the paper focuses on the problem of classing the normal brain tissues.
课程内容主要涉及一些关于社会生活、家庭生活主题的口语表达。
The content covers those topics from social life and family life.
环境化学的研究内容主要涉及：潜在有害物质下环境介质中存在的浓度和形态；
The research contents of the environmental chemistry mainly involve: existent forms and concentration of latent harmful materials in environmental mediums;
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