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引用第12楼hli168于2007-05-16 21:09发表的 :, \: J- r" `3 E
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我听认证公司的工程师说一台机器只有一个带圆圈的,其他接地的不要带圆圈,带圆圈的就是电源线进来处的接地。[s:3] 4 v: `+ H$ M/ }6 x
5017 Earth (ground) 2 e- {& E7 @7 N# r8 y
To identify an earth (ground) terminal in cases where $ d. l- ^; d. W8 T
neither the symbol 5018 nor 5019 is explicitly required.
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$ H! u) ]6 s+ u' D; n# ?5019 Protective earth (ground)6 z i$ {2 k9 I% _
To identify any terminal which is intended for connection to$ b( X4 o1 H8 i! _& C$ B4 R$ i( q
an external conductor for protection against electric shock2 T, D3 x5 [5 g; W L
in case of a fault, or the terminal of a protective earth% @! I" }# y7 ]! ^* s
(ground) electrode.; P. {3 H2 |0 p7 W2 T: p! \0 R8 L
; V; L, c; R) |7 [9 v: @" c7 J我是想明白5019这个地线贴纸的粘贴位置. |
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