three-pole single-throw switch
three-pole gang operated switch 三极联动开关 three-pole single-throw switch 三刀单掷开关 ; 三刀单投开关 three-pole double-throw switch 三刀双掷开关 ; 三刀双投开关 ..
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短语
单刀三投开关
single pole three throw switch
三极单投刀开关
[电]
triple-pole single-throw switch
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