发布时间:2025-01-23 01:11:11
1、室外天线的安装位置必须能清晰的打电话,如是《八木天线》安装必须为水平安装。
2、八木和吸顶天线的距离要尽可能拉开,大于8米,不能在同一个视线范围内,以免引起自激,典型的一般利用墙壁做隔离,效果好。
3、75-5同轴线一般是F头转接到主机,应绝对保证F头紧固,并充分接地,这样效果会比较明显。
4、F头一定为75-5英制线也应该配套75-7同轴线,否则会出现不能安装的问题。
自动喷淋系统当楼层大堂高度超过8米在gb50084一2001版规范中有要求需设置高效喷头
2025-01-23 01:11:11 2025-01-23 01:11:11 2025-01-23 01:11:11 2025-01-23 01:11:11 2025-01-23 01:11:11 2025-01-23 01:11:11 2025-01-23 01:11:11 2025-01-23 01:11:11 2025-01-23 01:11:11 2025-01-23 01:11:11 2025-01-23 01:11:11 2025-01-23 01:11:11 2025-01-23 01:11:11 2025-01-23 01:11:11 2025-01-23 01:11:11 2025-01-23 01:11:11 2025-01-23 01:11:11 2025-01-23 01:11:11我厂是做灯具镇流器之类的什么叫导通测试吊重测试支架的扭矩测试振动测试等等
2025-01-23 01:11:11 2025-01-23 01:11:11 2025-01-23 01:11:11 2025-01-23 01:11:11 2025-01-23 01:11:11 2025-01-23 01:11:11 2025-01-23 01:11:11 2025-01-23 01:11:11 2025-01-23 01:11:11 2025-01-23 01:11:11