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我觉得反推不一定正确。并且这段话出现在table 3中,我的理解只适合温升。并且适用于把手和手柄之类的metal.在table 3中"metal"共出现两次。Surfaces of handles, knobs, grips and similar parts which are continuously held in normal use$ j$ Z1 {: z5 ^4 T- l1 v
(e.g. soldering irons)
" V( L5 C [7 x* V-of metal– of porcelain or vitreous material
# X* x) c$ }; B, L- N! s, W- K1 g% R% N# R– of moulded material, rubber or wood9 C" F. M( m1 m( Q! c
Surfaces of handles, knobs, grips and similar parts which are held for short periods only in
8 h- \5 k6 @# Q$ V. Nnormal use (e.g. switches):
0 R- D4 s: Q1 w– of metal& J2 c+ m1 ]9 @9 j0 K, L9 L
– of porcelain or vitreous material
. I$ R$ p, K' d P% T: N– of moulded material, rubber or wood |
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