After shaking everyone's hands, he announced, "You know your building's radio-active, right?"
在握匀每个人的手后，他宣布：“你知道你的建筑物是放射性的，对不对？”
2
The RTLS solution USES a matrix of sensors, one for each zone, to receive radio signals emitted from an active RFID tag affixed to the automobile's frame.