Minutes and seconds are the verbal and written representations of an uncommon base-60 number system used in ancient Mesopotamia.

分和秒是古代美索不达米亚使用的一种不常见的60进制数字系统的口头和书面表达。

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Base on the traditional PID control theory, integrate control theory, computer science and artificial intelligent, deeply research on the control tactic of the global number Angle position system.

本论文在传统PID控制的基础上，结合控制理论、人工智能理论和计算机科学，对全数字一体化角位移系统的控制策略进行了较为深入的研究。

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Using Object-orientation as a base , we model the system as a number of objects that interact.

通过应用面向对象的建模技术作为基础，我们把软件系统模型化为一组互相交互的对象集合。

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No one can deny that the number of workers paying into the system at the base of the pyramid is declining relative to the number of retirees.

NPR: Much at Stake in Defining Social Security 'Crisis'