power-off protection 掉电保护
elevator power-off protection device 电梯停电保护装置
Auto shut off protection 点燃失败自动关闭时间
Power-off protection time 掉电保持时间
current cutting off protection 截流保护
power-off protection implement 断电保护器
cut off protection 截止型保护
turn-off protection 关断保护
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