求翻译：在大二的学期期末，我布置一个课程论文给学生，用数学和物理来解释身边的现象。谢珺同学的论文给我留下了深刻的印象。他写了一篇用数学解释日行迹的论文，他通过有效的数学模型和理论推导，解出出了近似的轨道方程，并且与实际情况符合的很好，展现了出色的抽象思维能力和逻辑推导能力。是什么意思？

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2 The end of the semester, I arranged a curriculum papers to students, using mathematics and physics to explain the phenomena around them. Xie Jun's thesis students left a deep impression on me. He wrote an article on a mathematical explanation of indentured papers, he through effective mathematical

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