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引用第0楼caballo3157于2007-08-08 07:10发表的 这两段话意思的区别? :
+ U; w& b) t& ^4 C在同一标准中有以下两段文字(摘选):
m" o$ m8 \! f
9 C" q0 m% h- U3 [9 b4.7.7 A lead wire intended for the connection of a grounded power-supply conductor shall be:: g5 u! h3 T' S( a
a) Identified by white or gray color;0 h7 A7 D0 Q- X
b) Marked with the letters, “WHITE,” “WH,” “WHT,” or “COM”, or3 m9 r4 U* d4 B: S! n) y
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- J' l/ X7 I) u, B注意看其中的差别 "grounded" 和 "grounded"2 f3 r" E% }- ] b$ `% N6 _
- grounded power-supply conductor 指零线
/ }" D9 h" Z p U/ U- grounding supply conductor 指地线9 `" \% S) B4 K
在结合原文看看, 与颜色标示是否对应上了. 在很多标准中还会以下面的描述表示 "火线"+ O! [+ d+ `' X6 t( D5 e+ k1 F
- ungrounded supply conductor 指火线, 具体标准号记不清了.... |
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