指出传统的接地保护原理的不足。
The shortage of traditional single-phase ground fault protection principle is pointed out.
零序电流保护是一种重要的接地保护方法。
The zero-sequence current protection is an important means of power system ground protection.
服务主密钥直接或间接地保护树中的所有其他密钥。
The service master key directly or indirectly secures all other keys in the tree.
服务主密钥直接或间接地保护树中的所有其他密钥。
The service master key directly or indirectly secures all other keys in the tree.
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