Sys is a logical field that can be either yes or no.
Sys是一个逻辑字段，其值可以为真或假。
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.
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。
Adopting this plan, it needs not to change beamwidth and there needs no common optical sys-tem for receiving and transmitting.
此方案无须要求通信系统具有能实现宽窄波束变换的光学系统，也不用预先解决收发天线共用的问题。
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