()位于下行链路每个无线块的开始3比特,有8个状态编码,用来复用上行链路业务,即允许来自多个移动台的无线块对有限的无线资源复用。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
免费的网站请分享给朋友吧