The formation and continuous development of modern nursing theory, which has formed a distinctive knowledge system, are basic reasons why the nursing occupation has got social respects.
代护理学理论的形成和不断完善，形成自己独特的知识体系，是护士职业获得社会尊重的根本原因。
The basic theory about how to design a in-situ sampling system has been discussed firstly based on chemistry properties and conditions of gas hydrate formation.
分析了设计天然气水合物保真取样系统的理论基础，即天然气水合物的化学性质、天然气水合物的形成及稳定条件。
The formation, basic theory and technical system of Geomatics are discussed, and the key techniques and applications of Digital Earth are also discussed.
讨论了地球空间信息学的形成、理论基础和技术体系，以及数字地球的关键技术和应用。
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