research objects短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 研究对象 The current research state of the automatic grouting system nationally and internationally is summarized. Finally, the main research objects are proposed for the dissertation. 提出了一种高性能智能灌浆控制系统的总体设计方案，并分别介绍了控制系统中的主要组成部分及其特点； fabiao