Kinematics character study of little degree of freedom parallel manipulator is an important question of research on the theory and the application of parallel manipulator.
欠秩少自由度并联机器人运动学性能研究是目前并联机器人机构理论研究与应用的热点与难点。
The hypothesis of the spiral of silence is an important theory about the research on the effects of communication.
“沉默的螺旋”假说是关于传播效果研究的重要理论，但在网络交往中这一假说明显地表现出其局限性。
This paper reviews enterprises crisis management theory from five aspects, and makes an attempt to extend research ideas on the theory.
文章从五个方面回顾了企业危机管理理论的研究进展，并尝试性地扩展了该理论的研究思路。
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