interlocking switch system [计] 联锁开关系统

interlocking switch group 联锁组合开关

sequence switch interlocking 程序开关联锁

switch interlocking 道岔联锁

mechanical interlocking protective switch [机] 机械保安开关

Earth switch interlocking coil 接地开关互锁

switch type interlocking frame 按钮式联锁机

interlocking with locally worked switch 非集中联锁