There are two reasons for negatives in measuring double-frequency induced polarization, one is electromagnetic coupling effect, the other is geo-boby existing in an impersonal way.
RFID systems achieve auto-identification and data-gathering of the object to be identified by utilizing space coupling of radio frequency signal to conduct two-way transmission of signals.
RFID系统利用射频信号通过空间耦合进行双向信息传输,实现对待识别物体的自动识别和数据采集。
3
By way of splicing and tapering at the fusion point of one-core single mode fiber and the two-core single mode fiber, an effective coupling technique is implemented.