安全防护技术是列控系统的重要环节。
Safety protection technique is the most important segment of train control system.
信息安全防护是一个博弈过程，黑客攻击技术魔高一尺，防护技术就道高一丈。
Information security is a process of game, hacking technology MoGaoYiChe, protection technology on a high.
信息安全防护是一个博弈过程，黑客攻击技术魔高一尺，防护技术就道高一丈。
Information security is a process of game, hacking technology MoGaoYiChe, protection technology on a high.
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