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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' ^9 ]9 j0 z' u2 f
(e.g. soldering irons)
) W/ L, U& E9 H# s-of metal– of porcelain or vitreous material
6 {* }5 L/ R' X, ]; G– of moulded material, rubber or wood8 f6 ~2 ?5 W# h
Surfaces of handles, knobs, grips and similar parts which are held for short periods only in
7 {5 O. @' R! \* bnormal use (e.g. switches):
2 g( p5 D7 o1 ~0 Z3 N! }– of metal5 t5 b$ Z3 K8 [
– of porcelain or vitreous material
s) B' ^. u& m9 W– of moulded material, rubber or wood |
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