Du Yucai's dialect study paid attention to the comparison. Its materials and methods were for reference to Chinesehistory and modern Chinese dialect study.
段玉裁的方言研究注重目验和历时、共时的比较，其材料及方法可供汉语史和现代汉语方言研究参考。
In this paper, the characteristics of modern offset printing, offset printing to modern quality control methods, ways to achieve study.
本文结合现代胶印的特点，对现代胶印质量控制的方法、实现途径进行学习研究。
As a new type experimental device for modern control theory, the beam balanced control system can be used to study various control methods.
平衡梁控制系统作为新的现代控制理论实验装置，适用于多种控制方法的研究。
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