Excellent production equipment and more than 9000 square standard workshop and consummation control system and rigorous check-out facility.

精良的生产设备和9000多平方标准厂房及完善的管理制度和严谨的检测设备。

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Just 200, 000 square feet of companies racing to fill their share of the world's billions of standard sockets-and betting on LEDs as the way to do it.

占地几乎200,000平方英尺大的许多家公司竞争着填补世界上数亿计的灯口插座。他们大多以led技术作为制胜手段。

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The average size is 3,131 square feet, with a standard deviation of 655 square feet. (Standard deviation is a statistical measure of variance.)

平均大小为 3,131 平方英尺，标准偏差为 655 平方英尺（标准偏差是一个描述差异的统计量度）。

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Because the square root of 10,000 is 100, whatever the standard deviation of the portfolio is, you would divide it by 100 and it would become really small.

因为一万的平方根是一百，无论这个投资组合的标准差是多大，当除以100后就都变得很小很小了。

耶鲁公开课 - 金融市场课程节选

The standard deviation is the square root of the variance.

标准差是方差的平方根

耶鲁公开课 - 金融市场课程节选

What we want to do now is compute the mean and variance of the portfolio-- or the mean and standard deviation, since standard deviation is the square root of the variance-- for different combinations of the portfolios.

我们现在要做的是,计算这个投资组合的均值和方差-,或者均值和标准差，因为标准差的平方就等于方差-,这对任何投资组合都是一样的。

耶鲁公开课 - 金融市场课程节选

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