In this article we are focusing on the non-technical theoretical knowledge needed; the technical aspects of these systems have been covered in previous articles within this series.

这篇文章主要集中在需要的非技术理论知识上，这些系统的技术方面已经在这一系列文章的前几篇中有所介绍。

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The integration between technical theoretical knowledge and technical practical knowledge is the keystone and difficulty in the theory and practice of curriculum of vocational education.

整合技术理论知识与技术实践知识是职业教育课程理论与实践的重点和难点。

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