The Olympic torch kicks off its 3-day relay in Heilongjiang today, starting from the Flood Prevention Cenotaph in Harbin, the first stop in the province.

奥运圣火今日开始在黑龙江境内进行为期3天的传递，首站是省会哈尔滨，起点是防洪纪念塔广场。

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This is because vehicles themselves are starting to relay real-time traffic data-and the more that do so, the more accurate traffic information will become.

这是因为装备这种设备的车辆自身也在传递着实时行车信息。传递信息的车辆越多，交通信息就越精确。

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One basic requirement to starting element of relay protection is that it has high sensitivity and can reflect all kinds of faults.

对继电保护启动元件的一个基本要求是能反映各种故障，并且灵敏度要高。

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