馈电器可以有多种设置方式，其中优选是使馈电器通过绝缘体穿过金属外壳且馈电器两端分别与金属外壳和管状导体相连接。
The feeders may be set in different modes, and are preferably connected to both the metal casing and one tubular conductor through insulator in the metal casing.
馈电器可以有多种设置方式，其中优选是使馈电器通过绝缘体穿过金属外壳且馈电器两端分别与金属外壳和管状导体相连接。
The feeders may be set in different modes, and are preferably connected to both the metal casing and one tubular conductor through insulator in the metal casing.
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