Paper cutter machine is backward with low degree of automation in paperboard processing, so new paper cutter machine has been designed based on pneumatic principle and simulation technique.
在纸板加工生产线中，存在着切纸机设备落后、自动化程度低的现状，为此基于气控原理和仿真技术设计一种新型切纸机。
The Backward function is important for the whole analysis while we use an On-Line Analytical Processing (OLAP) system.
该文论述了用户使用联机分析处理（OLAP）系统时，回退功能对整个分析过程所具有的重要意义。
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