阐述了UNIPOL聚乙烯装置开车期间，反应器内有静电时，进行冷凝态切换的过程。

This paper presents the condensed mode transition operation when static electricity is not very stable in the reactor during starting up of the UNIPOL polyethylene unit.

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同样，零-拷贝操作减少了耗费时间的用户态-系统态状态切换的次数，从而节省了时间。

Also, zero-copy operations reduce the number of time-consuming mode switches between user space and kernel space.

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该方案消除了TCP/IP协议栈的软件开销，也减少了核态与用户态的数据拷贝和上下文切换的开销。

The scheme removes the software overheads of TCP/IP protocols and reduces the overheads of context switching and data copying between the kernel and user levels.

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