如果距离均值的变动很大,那么这个平方数也会很大。
If it moves a lot — either way from the mean — then this number squared is a big number.
然后你减去e的平均值,这个量再平方。
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。
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.
7月份每天下降率为7.7万平方公里(2.97万平方英里),接近于1979年~ 2000年的平均值8.44万平方公里(3.26万平方英里)。
The daily rate of decline for July was 77,000 square kilometers (29,700 square miles) per day, close to the 1979 to 2000 average of 84,400 square kilometers (32,600 square miles).
九月范围均值 (百万平方公里)三月范围均值 (百万平方公里)
September/March (minimum/maximum) September Average Extent (millions of square kilometers) March Average Extent (millions of square kilometers)
运用WKBJ方法计算了电流平均值和电流平方的平均值,计算结果表明电流涨落是存在的,它是介观电路中主要的量子噪声。
By using the WKBJ method, the average of currents and square of the current are calculated, the results show the existence of the current fluctuation, which causes the noise in the circuits.
研究了平方剩余数的性质,给出了平方剩余数对于除数函数的均值公式。
Studying the properties of square residues, and giving a mean value formula of the divisor function for square residue sequences.
这反映在量子场论中场量平方的真空平均值不为零,这就是所谓的真空涨落。
This is reflected in the fact that the vacuum expectation value of the field squared is nonzero in quantum field theory. Therefore there exist the so called vacuum fluctuations.
静力优化设计的优化目标是截面截面应力平方均值最小,动力优化设计的优化目标是结构自振周期平方和最小。
The target of static optimization is to minimize the average of the squared sum of stresses while the target of dynamic optimization is to minimize the squared sum of natural vibration periods.
基于参数化的完全穿衣服的夸克传播子,利用量子色动力学(QCD)研究了核子的磁矩和电荷半径平方的平均值与夸克动量的依赖关系。
Based on the parameterized fully dressed quark propagator, we study the momentum dependence of the nucleon static properties and mean squared radius of nucleon in QCD.
利用解析方法研究了平方剩余数的若干性质,并给出了平方剩余数对于两个常用数论函数的几个均值公式。
By using the analytic method some properties of the square residues are studied, and several (interesting) mean value formulas are given.
结果表明,在经典波包上笛卡尔坐标、动量的平均值为零,而它的平方的平均值随时间变化。
By introducing the rectangular wave packet, we have obtained the mean expectation values of the coordinates, momenta, and the square of these operators.
对于区域分割,使用基于加权平方欧式距离的均值聚类算法代替传统的均值聚类算法。
It applies weighted K-means clustering for region segmentation, instead of traditional K-means clustering.
论文中引入了一种特殊的经典波包——矩形波包,计算了笛卡尔坐标、动量以及它们平方的平均值。
This dissertation basically includes the following two studies:First, we calculate the expectations of the Cartesian momentum operator over the wave packet on sphere.
特别的,此参数的构成是以平方英尺计的单品,托盘,地面存储的开平方根的加权平均值。
Specifically, the index constructed was a weighted average of the square root of the broken-case, pallet are and floor storage square footage estimations.
Cpm是一个总体的能力指数,定义了均值偏离目标值的均方差的平方根和规范宽度的之间的比值。
Cpm is an overall capability index defined as the ratio of the specification spread (USL - LSL) to the square root of the mean squared deviation from the target.
Cpm是一个总体的能力指数,定义了均值偏离目标值的均方差的平方根和规范宽度的之间的比值。
Cpm is an overall capability index defined as the ratio of the specification spread (USL - LSL) to the square root of the mean squared deviation from the target.
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