Electrical operation devices which has the two function of power cut emergency and fault emergency must indeed meet the "security norms".
真正满足《安全规范》的紧急电动运行的电气操作装置必须严格具有停电应急和故障应急两种功能。
Electrical operation devices which has the two function of power cut emergency and fault emergency must indeed meet the "security norms".
真正满足《安全规范》的紧急电动运行的电气操作装置必须严格具有停电应急和故障应急两种功能。
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