Copper is the best conductor of heat, having about 7 times the conducting power of iron, while iron conducts 100 times as well as water, and water has 25 times the conductivity of air.

铜是最好的热传导体，其导热能力约为铁的7倍，铁的导热能力是水的100倍，而水的导热能力是空气的25倍。

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Not long ago, a team of German university students announced that they had created a small aerodynamic vehicle that draws power from conducting paths on a track.

不久前，一个德国大学学生团队宣布他们研发出来一种小的能量空气动力飞行器，它能能从轨道的传导途径中汲取。

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After the SQL is captured, you can use the full power of Optim Development Studio for modifying the SQL, visualizing access paths, conducting performance testing, and doing impact analysis.

捕捉SQL之后，您可以使用Optim Development Studio的完整功能修改SQL、可视化访问路径、执行性能测试并进行影响力分析。

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"They typically had a steel casing, copper for conducting power down them and optical fibres for collecting data, " he said.

BBC: Robot sub aims for deepest ocean

" Hatch told Freeh, "This concurrent grant of investigatory power authorizes you to exercise independent judgment in conducting criminal investigations.

CNN: Hatch Asks Freeh For Independent Investigation

Pam Moore , a Forbes Top 50 Social Media Power Influencer offers some basic directions and helps for conducting a successful Tweet Chat here.

FORBES: How To Use Twitter Chat To Increase Your Business In 2013