进入端 meaning in English

u tream end
upstream end

This standard makes the installation of an spd at the electrical service entrance compulsory for all new buildings
此标准强制要求所有新的建筑物在电源进入端安装电源电涌保护器。
First you need to give it a name then if the name of the protocol isn ' t in the protocol drop down list then just click on any and enter in the port number
首先，如果在规程选项的下拉菜单中选择，如没有被列出的话，你就要命名一个，然后选any ,进入端口号。
However , by the time a lightning strike has traveled through the distribution network , surge arrestors will have dissipated a proportion of the charge , network impedance will have shaped the impulse and the residual energy can be represented in terms of its waveshape , and its peak current which is what will be present at a service entrance
然而，雷击经过电力网络进行传送以后，避雷放电器会将一部分能量泄放掉，网络的阻抗也会对电涌进行修整，而残余的能量将可以以它的波形来体现，其峰值电流也就是建筑物进入端将会出现的情况。