Finally, the principle and arrangement of SPDs on equipments signal side was briefly introduced.
最后，简要介绍信号电涌保护器的原理和配置。
If SPDs are to be installed at more than one location in a building, what issues must be considered in coordinating the SPDs at building entrance and others connected to the same line?
如果在一幢大厦里不只一处安装SPD，大厦入口处的SPD和其他连接在同一条线上的SPD进行协调配合时，必须考虑什么因素？
This paper introduced the structural design and working mechanism of SPDS-120 and SPDS - 114 releasing tools, especially the structure, characteristics and relevant design calculation of SPDS - 114.
介绍了SPDS- 120和SPDS - 114两种型号丢手工具的结构设计、工作原理，重点介绍了SPDS - 114型丢手工具的结构、特点及相关设计计算。
This paper introduced the structural design and working mechanism of SPDS-120 and SPDS - 114 releasing tools, especially the structure, characteristics and relevant design calculation of SPDS - 114.
介绍了SPDS- 120和SPDS - 114两种型号丢手工具的结构设计、工作原理，重点介绍了SPDS - 114型丢手工具的结构、特点及相关设计计算。
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