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在不同 volume 之用途, UL 没有特別界定清楚, 但可以举几个例子作参考:
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例 1:
; [9 w$ t) Q" O* b2 u! r3 _+ KVolume 1: Power tools (Listed)3 v9 T8 F/ ?/ n/ a" S. a' \9 P" R
Volume 2: Recognized components for power tools
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4 i9 x7 E3 k5 {+ E' ^- N9 |例 2:: x9 v/ I& C' g* B5 Q y6 {
Volume 1: Air purifier (Listed)
0 w( k9 v% U1 E0 S' o- v2 V9 dVolume 2: Unlisted components for air purifier4 t; M* c. Q6 Z) m$ V1 u! v
- Y0 m2 {0 i. e9 g& Y例 3:8 d5 g0 L# H9 D$ I4 P
Volume 1: Switches for current carrying (Recognized components)
6 J4 z7 W, Z5 U' AVolume 2: Switches for signal reversing (Recognized components)& b3 F$ a l/ J& s& V
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例 4:% d0 q2 z, F* q p- B
Volume 1: Switches (Recognized components)
T" r; a( ]4 W5 M1 AVolume 2: Switches (Recognized components) 部份 volume 1 型号, 不是全部。; ?$ V' @/ j7 D9 u
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