操作系统为程序开发和执行提供方便的环境，并合理安排运算以及保证计算系统的性能。
It provides a convenient environment for the development and execution of programs and attempts to schedule computational activities to ensure good performance of the computing system.
结合计算机高速运算的性能，对稀相、浓相气力输送系统设计的系统模块进行了系统的编写，极大地提高了系统设计效率。
Based on the fast numerical capability of computer, the program of module for dilute and dense phase pneumatic conveying system is made, which makes the efficiency in high.
随着存储系统的访问速度与处理器的运算速度的差距越来越显著，访存性能已成为提高计算机系统性能的瓶颈。
With the processor-memory performance gap continuing to grow, the performance of memory access becomes the major bottleneck of the performance improvement for modern microprocessors.
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