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DC - national differences based on UL and CSA component requirements. DC
6 B5 o1 p6 \6 l) J* P( B7 H3 ynational differences may be less stringent than, equivalent to, or more stringent than
8 e/ b. k: M; gcomponent requirements in IEC 60950-1.
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DE - editorial national differences that correct typographical errors in IEC 60950-1 or# s1 g% v! H, Q5 c+ [1 ]
revise the terminology, but do not alter the technical intent of the requirements. This; u( y2 {, p6 g( \( v" A- L
notation is also used for informative statements such as the Preface.+ H# s5 ?6 P. P2 Q( ?7 f* {
- m8 x; n x" U: D M7 t9 T
其實還有很多,這些定義在UL標準非常前面的General的地方有定義. |
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