they also shall be constructed so that the indicator cannot be misassembled : L7 L0 T d# ~- nto give an incorrect indication as to whether the valve is open or closed0 z+ t, u) K6 j3 e5 d
从后面incorrect 看出是错装
原帖由 睿智 于 2007-12-8 19:10 发表 6 F8 v' Z( d' }9 l$ K- wthey also shall be constructed so that the indicator cannot be misassembled 3 k8 l" w0 l* F4 N7 ]1 s1 S/ A
to give an incorrect indication as to whether the valve is open or closed" d4 y1 k' ]- f8 x5 h* P% k
从后面incorrect 看出是错装