NASCAR, the NFL, professional hockey, and other sports apply real-time video effects, such as the colored first-down line in football, based on precise geospatial data.
职业冰球和其他运动都开始应用实时视频效果，比如在橄榄球场上根据精确的位置数据给触地得分区加颜色。
When do electronic surveillance devices such as computers, video cameras, and telephone monitoring step over the line from "effective management controls" to "intrusions on employee rights"?
什么情况下电子监视手段，如计算机，摄像机和电子侦听等超越了有效控制的界限，而侵犯了员工的权利？
The system has many functions, such as on line record?history record?video alarm, history tendency, ect.
该系统具有实时报表、历史报表、音像报警、历史趋势、事故分析使用等功能。
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