1) Quantity NDE
定量无损估计
2) quantitative nondestructive evaluation
定量无损评估
3) non invasive estimation
无损估计
1.
After the analysis of the clinical data, it is found that this method is suitable for the non invasive estimation of the gestational week and fetal weight.
通过对临床数据的分析，发现：这种方法可以较好地用于对孕周和胎重的无损估
5) unbiased estimator
无偏估计量
1.
It has been proved that variance of sample is an unbiased estimator of population variance in economic mathematics textbooks, but it isn t tenable to a standard deviation.
经济数学教材中,已经证明了正态分布的样本方差是总体方差的无偏估计量,但样本标准差并非是总体标准差的无偏估计量,本文利用P(x)函数和X~2(卡方)分布给出了其调整因子的详细求解过程。
2.
We present a unbiased estimator of population total in the method and discuss the variance of the estimator and unbiased estimator of the variance.
本文把双重抽样技术用于ＰＰＳ抽样，给出了该方法下总体总值的无偏估计量，估计量的方差及方差的无偏估计公式。
6) Nondestructive examination and evaluation
无损鉴定和评估
补充资料：X射线无损探伤仪
X射线无损探伤仪
谬银._屏一潇麟X射线无损探伤仪
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条