本文介绍了国内外森林水文研究简史。
In this paper, the research at home and abroad on forest hydrology has been introduced.
介绍了职业暴露的研究简史、概念及职业危险因素。
It introduced the research history, concept and occupational risk factors of vocational exposure.
本文涉及属的研究简史、名称、鉴别特征、已知种和地理分布。
This paper deals with the brief history of research, names, diagnosis, species known, and distribution of the genus Anotylus c.
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