On the basis of making testing and verifying reports of national standard parameters, the definition method and some experiments data of average value deviation and standard deviation of roughness comparison specimens for plastic parts are discussed, and some problems in testing surface roughness for plastic parts are raised.
在制定国家标准———塑料件表面粗糙度比较样块的参数测试、验证报告基础上，总结了塑料件表面粗糙度比较样块平均值偏差和标准偏差的确定依据，对实验数据进行了分析，指出了塑料件表面粗糙度测量中存在的问题及解决办法。
tiny deviations from the average.
任何偏离平均值的变化。
The amount by which the average of a set of values departs from a reference value.
一组数值的平均值对某参考值的偏离量。
The accelerometer bias errors result in an average constant offset plus an oscillatory component.
加速度计的偏置误差形成一平均的常值偏离加上一振荡分量。
an extreme deviation from the mean.
与平均数偏差最大的值。
experimental standard deviation of the mean
平均值的实验标准偏差
the arithmetic mean of the absolute values of deviations from the mean of a distribution.
分布平均数与偏差绝对值的算术平均值。
average absolute relative deviatio
平均相对离差绝对值
standard deviation of the arithmetic mean of a series of measurements
测量列算术平均值的标准（偏）差
standard deviation of weighted arithmetic mean
加权算术平均值的标准（偏）差
the second moment around the mean; the expected value of the square of the deviations of a random variable from its mean value.
接近平均数的二阶矩；平均值随机变量的偏差的平方的期待值。
the expected value of the square of the deviations of a random variable from the point of origin.
偏离原点的随机变量的偏差平方的期望值。
Two-fund Separation Theorem under Mean-LPM Model;
均值——下偏距(M-LPM)组合优化下的两基金分离定理
Deviation Value--A New Way to Measure Income Distribution;
偏离值法—度量收入分配均等程度的新方法
(physics) the maximum displacement of a periodic wave.
（物理学）周期波偏离平衡位置的最大值。
The standard deviation from the mean is the preferred quantity.
用平均值得出标准偏差是优先采用衡量的单位。
weighted mean value
加权平均值，计数平均值
correct(ed) average value
准确平均值，精确平均值
single plane mean outside diameter deviation
单一平面平均外径偏差
