tunnel signal的意思|示意

The antenna has a simple structure, light weight, easier design, lower cost, fit for the signal cover of the narrow and long region such as tunnel, expressway, long buildings.

该天线结构简单，重量轻、设计容易、制造成本低廉，适合隧道、高速公路、长形建筑等狭长区域的信号覆盖。

The results show that a tunnel radio signal consists of a summation of many propagation modes.

研究结果显示：矩形隧道电磁波的传播，是由多种模式共同作用的结果。

It can monitor the crack signal in the concrete structure, for example, bridge, highway, tunnel and building etc., using the embedded optical fiber sensor.

它是用埋入式光纤传感器来监测类似桥梁、高速公路、隧道和房屋建筑等混凝土结构中的开裂信号。