Therefor by earthing connectednet of set, it reduce earthing resistance, make the electricity discharge in earth prompt without dangerous overvoltage.
这样通过延伸机组的接地网进一步降低接地电阻，使雷电流迅速流散入大地而不产生危险的过电压。
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Stay connected. Regular contact with friends and family not only enriches seniors' lives, it provides a safety net — people who care and will notice major mood changes.
The additional capacity, argue proponents of IPv6, will be needed to cater to the so-called "Internet of things" where devices such as TVs, fridges and home heating systems are connected to the net.