The paper focuses on america as the main researchful object .
本文选取美国作为主要研究对象。
The development of researchful experimental teaching plays a practical significant role in training students scientific research and innovation capabilities .
开展研究性实验教学，对于培养学生的科研能力和创新能力具有重要的现实意义。
So this paper reviews the course of project management and also brings forward the researchful issue based on realistic circumstances firstly .
所以本文首先回顾了项目管理发展的历程，同时也结合现实中的情况提出了有待研究的问题。
The researchful progress of dynamical theory for elasticity s earth rotation .
弹性地球自转动力学理论的研究进展。
The text had accomplished the researchful task hereinafter .
