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It shall have SF6 gas density relay and emergency alarm as well as blocking operating mechanism.
有SF 6气体密度继电器,并能事故报警,及闭锁操作机构。
youdao
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It shall have SF6 gas density relay and emergency alarm as well as blocking operating mechanism.
有SF 6气体密度继电器,并能事故报警,及闭锁操作机构。
youdao