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楼主 |
发表于 2012-4-17 16:31
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Nezof 发表于 2012-4-17 15:08 3 @0 c! N/ d: N3 b0 [" m) K( G
双层绝缘线中间是没空气的吧
* o6 b/ P$ i# t6 I即使有的话,按照你这段的字面意思来看也是算的 5 m& X/ @8 [$ @* v9 \4 j" k) h: t( I
已经找到答案了,以最外面的绝缘厚度为准。7 h' k: d* u8 O( j
7.12 If a flexible light enclosure consists of multiple layers of polymeric materials, all layers shall comply( u' U$ I/ r; Y3 U
with 7.2 and only the outermost layer needs to comply with the UV resistance and water exposure( }' Q- E7 Y2 m' N, e: E* { ? n
requirements of 7.10(a), providing that the outermost layer complies with the minimum thickness of 7.4. |
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