Abstract. Taking the 20-high Sendzimir mill as research object, the contact force and contact stress of the roll system were calculated and analyzed, and the distribution of them has been gained. What is more, the drive torque, including the rolling torque and rolling frictional torque was also analyzed, and the composing condition of the driving torque and rolling frictional torque has been obtained. The research results are significant for the design of the 20-high Sendzimir mill.
Abstract. Library has its unique value in University. Firstly, its value of knowledge is embodied in the accumulation and inheritance of knowledge. Secondly, its value of education is reflected in enriching students' inner world and cultivating their self-learning ability. Thirdly, as a public third space, university library nurtures people's belief of freedom, equality and humanism. That shows the social value of libraries. With the development of our society, there is no doubt that university library will continue to exist and succeed in a four dimensional space with knowledge, learning, culture and Internet.
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