相对平均偏差

本文叙述了人工培养的硒酵母中硒的气相色谱测定方法，具有较高的灵敏度及选择性，方法的测定极限为2×10~（-11）克，相对平均偏差为2.2%，相对标准偏差为2.67%。

A GC method is described for the determination of selenium in artificially-cultured selenium-yeast . It is of higher sensitivity and selectivity , and with a detection limit of 2 × 10-11 g , a relative average deviation of 2.2 % , and a relative standard deviation of 2.67 % .

样品测定结果的相对平均偏差为0.26%；

Relative mean deviation of determined results of the sample is 0.26 % .

本法与药典法相比，相对平均偏差小于0.4%，线性范围为5～50μg·mL-1，回收率为97%～102%。

The relative standard deviation is less than 0.4 % . The linear range is 5 ~ 50 μ g · mL - 1 and the recovery is 97 % ~ 102 % .

对于水（包括超临界水）、醇类和HF等流体在宽广的压力和温度范围内，使用实验数据对本方程进行检验，其自扩散系数的相对平均偏差在7.5%左右。

The equation reproduces the experimental self-diffusion coefficient with average relative error of about 7.5 % for water ( including the super-critical water ), alcohols and hydrogen fluoride over wide ranges of temperature and pressure .

本法相对平均偏差低于2%。

The average deviation is less than 27 % .

mNBA晶体的比热容，其相对平均偏差在0.08%～0.47%之间。

The relative average deviations is between 0.08 % ~ 0 . 47 % .

结果表明，电导滴定法、电位滴定法能有效地克服有色油脂自身颜色的干扰，测定结果的相对平均偏差在5‰以下，精密度相当高。

The results show that the conductimetric titration and the potentiometric titration can keep the colorful oils away from color disturbance effectively . The relative mean deviations of the measured values with high precision are below 5 ‰;

用直接滴定法测定单一Ba2+或Sr2+浓度时，相对平均偏差较大，相对误差则很大。

In determining single Ba ~ ( 2 + ) or Sr ~ ( 2 + ) by direct titration the deviation from mean of the determinations is not small and the relative error & very large .