在莫斯科爆炸事件发生后，美国纽约在地铁站加倍巡逻警力作为防范。
New York police doubled patrols of the subway as a precaution following the bombings in Moscow.
本文介绍了一种集在线式巡逻管理、门禁和报警功能于一体的安全防范系统。
This article introduces a safety guard system with functions of online patrol management, access control and alarm monitoring.
传统的防范手段——人工巡逻方式不能做到实时监控，无法做到全天候的防入侵、防被盗、防破坏。
The traditional means of prevention——Artificial patrol modecan not achieve the real-time monitoring, unable to achieve all-weather prevention intrusion, prevention theft, anti destruction.
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