The paper analyzed reasons for indoor signalcover and interference and proposed ways to reduce interferential, by a practical project design.
通过一个实际工程的设计，分析室内信号覆盖干扰的原因及减少干扰的方法。
2
The antenna has a simple structure, light weight, easier design, lower cost, fit for the signalcover 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。
3
A fox USES its tail (or "brush") as a warm cover in cold weather and as a signal flag to communicate with other foxes.