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各位同学， [5 i- D: [) Z" |/ _9 _ Z
64.4.2 Each product is to be operated at room temperature for 3-1/2 hours. The product is then to be$ B1 @! J; H' R
de-energized and immediately submerged in at least 304.8 mm (1 foot) of water. The temperature of the
8 u8 D9 K) f2 Z$ _0 Zwater before submersion is to be 5°C (41°F) or less. The product is to remain submerged for 4 hours. At
# F5 b2 S' g; J* a3 i, v- tthe end of four hours, the product is to be removed from the water and subjected to 2 additional cycles9 }0 L# J% M# D/ ?+ f
of operation and immersion. Between each cycle, the product is to be placed in a dry location at room$ l% M/ b. U* C% F& Z
temperature for approximately 16-1/2 hours. The product is to be inspected immediately after the third( M0 n, T3 G- p( M- x% H
immersion for evidence of water entry.. {8 W6 ~, \1 n8 \ }+ A
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3-1/2 hours.是指2.5小时还是3.5小时呢？
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谢谢！$ ]$ U/ W% {, C8 o0 s3 p* U1 t) b
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发表于 2014-8-7 11:22
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