原帖由 睿智 于 2007-12-8 19:10 發表5 I: g7 X/ q5 D# i/ U
they also shall be constructed so that the indicator cannot be misassembled 7 _$ p5 v1 G! I2 P3 R% i
to give an incorrect indication as to whether the valve is open or closed
從后面incorrect 看出是錯裝
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