This paper discusses the determination method for the polymer volume combining with theoretical study and field application, and determines a reasonable polymer volume scope.

本文通过对两种不同确定方法的阐述和计算（实测）结果的分析比较，得出了确定电缆导体单线直径的一种较好方法。

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The first year provides students with a sound theoretical basis for later study.

第一年为学生以后的学习奠定坚实的理论基础。

《牛津词典》

In this process, an interaction of theoretical study with practical work.

在这个过程中，要加强理论的探讨和工作推进的互动作用。

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Last year, the Department for Children, Schools and Families introduced the Diploma qualification in England which combines theoretical study with practical experience.

BBC: Q&A: Life in a harsh jobs market