工程实践表明，已不能通过单从电主轴单元或变频器单元的设计与优化来实现系统整体性能指标的最优化，而需要从机电全局角度来设计与优化变频调速系统。
Enigeering practices indicated that can't achieve optimization of the system overall performance only by improving the motorized -spindle or the frequency changer, but needing improving both.
其理论分析与实践证明：性能化设计理念为解决建筑火灾隐患、更好地满足建筑功能需要提供了一条新的途径，该理念的应用将促进建筑火灾隐患整改的科学化、合理化和成本效益的最优化。
The theoretical analysis proves that performance design provides a new way to address the fire risk in buildings. The idea will be used to improve the management of fire risk a lot.
其理论分析与实践证明：性能化设计理念为解决建筑火灾隐患、更好地满足建筑功能需要提供了一条新的途径，该理念的应用将促进建筑火灾隐患整改的科学化、合理化和成本效益的最优化。
The theoretical analysis proves that performance design provides a new way to address the fire risk in buildings. The idea will be used to improve the management of fire risk a lot.
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