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各位同学，
0 x# T1 z, O: ~3 |- h 64.4.2 Each product is to be operated at room temperature for 3-1/2 hours. The product is then to be
+ v- G3 k$ i2 z! k8 Y/ Ede-energized and immediately submerged in at least 304.8 mm (1 foot) of water. The temperature of the- g1 V9 F3 S: h1 v, l+ V! V
water before submersion is to be 5°C (41°F) or less. The product is to remain submerged for 4 hours. At
' S7 `! l' i1 s8 m V& E7 ]. g* zthe end of four hours, the product is to be removed from the water and subjected to 2 additional cycles9 d( J. Q( K" A9 F7 ?
of operation and immersion. Between each cycle, the product is to be placed in a dry location at room7 x- Z" Q( J6 I$ S Q, ^
temperature for approximately 16-1/2 hours. The product is to be inspected immediately after the third
/ _$ Q6 [% N# `, ^' x ?8 simmersion for evidence of water entry.
9 W+ j! }1 W) Y; l* Z2 {5 Z" L0 A
/ N9 \1 F6 O6 R: J7 A. n3-1/2 hours.是指2.5小时还是3.5小时呢？
& s9 L( r% d6 ?9 t; k; t" E
# h; \" }* Z1 A' W9 g. M谢谢！5 `; K/ J( ]1 M Z
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发表于 2014-8-7 11:22
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