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1·The paper described the rational distribution of the compressed air-suppl system, the design and installation of the tube system of the system.

本文简述了口腔供气如何合理配置压缩空气系统，管路的设计与安装。

2·Choose two kinds of supplementary materials, imported Carboxymethylstach Sodium and Hyprolose, to have the contrastive experiments and make sure the use of final suppl.

选用两种辅料，进口羧甲基淀粉钠和羟丙纤维素进行对比实验，确定最后辅料的使用。