看看云如何改变IT运营的成本方程序，或将带来怎样的灵活性与安全性。

Look at what changes the cloud can make to the economic equation of it operation, or what it can bring to agility and security.

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针对多体系统符号或数值形式运动方程的推导，给出了一种简单灵活的MAPLE程序设计方法。

A simple and flexible method for MAPLE programming is introduced to generate symbolic or numeric motion's equations in a multi rigid body system.

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