landing door safety switch的意思|示意
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升降门安全开关
landing door safety switch的网络常见释义
层门安全开关 ...电梯零部件术语]层门地坎 landing sills；sill elevator entrance · [电梯零部件术语]层门安全开关 landing door safety switch · [电梯零部件术语]层门；厅门 landing door；shaft door；hall door ..