Using the licensed spectrum in "secondary utilization" way, cognitive radio provides a feasible solution for contradiction between spectrum resource scarcity and increasing radio access demands.
认知无线电通过对授权频谱进行“二次利用”的方式，为缓解频谱资源缺乏与日益增长的无线接入需求之间的矛盾提供了可行的思路。
The invention relates to a secondary utilization device of washbasin water used in bathrooms. It is an automatic washroom water saving device.
本发明涉及一种用于洗浴卫生间的洗面盆水二次利用装置。
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