基于传送树的无线传感器网络移动目标定位跟踪技术研究

商用网络在互联网上得以运行,首先应搭建或使原有的网络升级为内部网,而专用的内部网与共用的互联网的隔绝则有赖于防火墙技术。有了防火墙,商家们便可以比照安全地在互联网上进行相应的商业流动

(For commercial networks to run on the Internet, the original network should be built or upgraded to an intranet first, and the isolation of the dedicated intranet from the shared Internet depends on the firewall technology. With firewalls, businesses can conduct corresponding business flows on the Internet safely.)

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