这些装置的目的是限制过电压的电话线路.过电压一般造成的交流电源系统或雷电干扰诱导或进行的电话线.一个设备提供2点保护与通常用于保护双线通信设备（如环和尖端电线电话和调制解调器）.
These devices are designed to limit overvoltages on the tele
1个回答
相关问题
-
These are terms used in digital electronics to designate the
-
They are hard pressed to limit their families to one child怎么
-
Check all connections and make sure all devices are on. To c
-
Do you want to try on these shoes to see _ they are the righ
-
--are these any ____ on the farm?
-
英语翻译A portable machine or device is designed to be easily ca
-
英语翻译By working within this limitations the designer will acc
-
The pavements are designed to provide easy access for the bl
-
For the second time in these days we are going to pass on th
-
wha are the principles you should adopt to design questionna