This paper is concerned about the strategies of learning oral English.
本篇论文论及了英语口语学习策略。
This paper is concerned with the framework of intelligent control systems.
本文主要研究智能控制系统的框架结构问题。
This paper is concerned with the kinetics and mechanism for the reaction between tetralin and coumarin.
本文对四氢萘和香豆素的反应动力学和反应机理作了研究。
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