The technical definition of variance is the random variable's second central moment, the weighted average of the square of the differences from the expected value.
3方差的专业定义是随机变量的二次中心矩，与期望值之差的平方的加权平均值。
According to the equation of chromatographic dynamics, we can get the second central moment and the third central moment of elution curve of HPLC under linear nonideal conditions.
从液相色谱过程动力学方程出发，运用电子计算机证明了在线性非理想条件下高效液相色谱体系中不同保留值组分在柱末端峰形的分布基本一致的结论。
Why did the Central Bank decide to investigate the market in loan assignment at this precise moment?
为什么央行恰恰在这时候决定调查贷款转让市场？
Indeed,let me take a moment and read a poem that emphasizes this thought, because this is certainly one central,very bad thing about death.
事实上，让我念一首诗来强调它，因为这确实是死亡的主要坏处。
Yet there's less than 1% of the global users on IPv6 at the moment; although some countries like France have a greater proportion thanks to central IPv6 tunnel providers.
然而目前全球的IPv6用户尚不足1%，即便法国等国家仰仗中心IPv 6管道提供商而占了更大的比例。
For the moment, the central bank's actions seem to have calmed the money markets, where rates fell below 7% on November 5th.
11月5日利率下降了7 %，目前，央行的行动似乎已经稳定了资金市场。
Eerily, just a few hours after people around the country observed the passage of one month with a moment of silence, a series of strong aftershocks struck central and northern Japan.
可怕的是，仅仅一小段时间的沉寂之后的这一个月来，日本的中部和北部不断受到强劲的余震的冲击。
At the moment she's trying to push her baby carriage out of the basement of Building 9 in the Jiqing Li residential complex in central Beijing.
此时此刻，她正努力地把自己的婴儿车从位于市中心的吉庆里(音译)9号楼的地下室里推出来。
But Desperate Housewives went awry the moment the creators stopped trusting their central quartet to drive the plot, and started making things happen to them.
但自从创作者不再以主妇四人组来带动剧情，而是编造了一系列的事情发生在她们身上，该剧便开始失败了。
We simply cannot afford to be distracted from our central purpose. We cannot let the momentum, the drive, stumble for a moment.
我们绝不能忘记我们的核心宗旨，而且一刻都不能减弱势头和活力。
The European Central Bank (ECB) has restored calm in Italian and Spanish government-bond markets for the moment by making big purchases of their debt.
欧洲央行(European CentralBank)大量购买意大利和西班牙的国债，暂时缓解市场的焦虑。
This becomes the central element, inaccessible and contemplative, able to freeze time and build an intimate moment, a dialogue with the past.
这成为了中心元素，不能接触却发人深省，能冻结时间，建立起一个深刻的时空与过去进行对话。
Use of rotational inertia of the definition of calculated rigid oval ring around the ring with the vertical plane through the central axis and the moment of inertia.
运用转动惯量定义式直接计算出椭圆环刚体绕垂直与环平面且通过中心轴的转动惯量。
Based on the Poisson bracket and the discriminant of integral of motion, we prove the problem that the moment of momentum is the integral of motion when the mass point is affected by central force.
运用泊松括号，依据运动积分判别式，证明了质点受有心力作用时，其动量矩是运动积分的问题。
Before it was Terry and Carvalho and nobody else but at this moment we have three central defenders of quality and they will have to compete between them.
以前我们有特里和卡瓦略但在那之外就没人了，但是现在我们有3个高质量的中后卫，他们都要在他们之间竞争。
Their existence and movement in this moment is synchronized, even harmonious as the power shifts back and forth between the central arch they form together.
它们的位置、动作都经过精心设计，互动和谐，力量和招式在双方间流转，中间形成了一道拱门形状。
Imagine, for a moment, that you're the central banker of a country with nearly 600 million residents.
现在就请想象一下，你是一个拥有6亿居民的国家的央行行长。
Imagine, for a moment, that you're the central banker of a country with nearly 600 million residents.
现在就请想象一下，你是一个拥有6亿居民的国家的央行行长。
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