由于人民群众物质文化生活的不断提高,电视机已日益普及。在一些城市,当你漫步在大街小巷,举目环视,你将发现电视天线已如林立。由于天线多了,相互之间会有干扰,影响电视收看效果;而且一家一户的天线体系,没有良好的接地设置,雷雨天气,将雷电引入室内,容易击毁电视机,很不安全。 Due to the continuous improvement of the people’s material and cultural life, televisions have become increasingly popular. In some cities, as you stroll through the streets and look around, you will find that television antennas are already standing. Because there are many antennas, there will be interference between each other, affecting the TV viewing effect; and the antenna system of one household does not have a good grounding setting, and thunderstorms will lead the lightning into the interior and it is easy to destroy the TV. It is very unsafe.