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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:: `( j0 u: w6 C7 s9 Y
7 u) Y$ X" P. C; t7 ^ S! l5 h& Q例 1:
: S7 ?+ j$ [0 [ G: |Volume 1: Power tools (Listed)1 E* n: H( @: A+ L2 E
Volume 2: Recognized components for power tools
7 m. L$ L. Z1 P4 i2 Q2 T+ i1 K: j% |* ?* u/ i- {* K: w) E6 P( J5 h
例 2:9 o2 G; q- _- Q6 d1 M
Volume 1: Air purifier (Listed)0 e) Q# x6 d* p4 L% u1 ?
Volume 2: Unlisted components for air purifier4 ]1 X' ~) T8 x* [: m8 }! u8 q2 h
5 o! ~! u; C B
例 3:
3 G* V8 l( W2 l" R% c& j* z; {0 `Volume 1: Switches for current carrying (Recognized components)5 Z- H, o) v; H
Volume 2: Switches for signal reversing (Recognized components)8 U- O- H" S y2 T: r
8 |, Q4 f; d7 Y! b8 C' q: V9 @+ Z
例 4:% E9 i1 O! v- P& Q9 X6 ]
Volume 1: Switches (Recognized components)
, s: F5 M( H0 O% gVolume 2: Switches (Recognized components) 部份 volume 1 型号, 不是全部。
B; Y/ e7 |5 f( l' Y w
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