Such blimps can keep surveillance and ordnance - guiding equipment aloft for a few hundred dollars an hour.

这种气球飞艇能以几百美元一小时的成本把监控设备及定向武器设备悬浮在高空.

Because of surveillance radar equipment, modern military affairs become more complicated.

有了监视雷达,警戒雷达, 现在军事变的复杂的多.

Products include: range wireless video surveillance systems, video servers, monitoring equipment.

产品包括: 远程无线视频图像监控系统, 网络视频服务器, 监控器材等.