虚拟设计中心克服了空间和时间的局限性，具有系统优化组合和有效协调的优越性。
The limitation of space and time is overcome by dummy design center that has advantages about optimize combination and effective correspond in the system.
脉冲射流水力共振系统各参数的优化组合是提高射流功效的关键因素之一。
The optimized combination of parameters of pulsed jet hydraulic resonance system is a key factor to improve the efficacy of pulsed jet.
在不增加人员和设备的条件下，通过服务方式的优化组合能明显提高系统的性能。
Through the analysis optimization and combination queue system can improve service quality and sys tem efficiency even though there is no increase of manpower and equipment.
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