喷雾干燥技术的机理及工艺优化常常只能采用实验的方法来分析和探讨，缺乏理论研究，影响了喷雾干燥的技术经济指标。
The drying mechanism and technology optimization of spray drying are generally studied by experiments. And spray drying lacks theory research, which affects its technical economic index.
本文试图通过其它学科对于空间的理论研究，探讨包装设计的空间问题。
Trying through space theory research of other disciplines, the article here studies space problems of package design.
理论研究探讨了社会适应的概念和社会适应性结构两个内容。
Theoretical research probes two domains: the concept of social adaptation and the structure of social adaptation.
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