首先对被分析物料实验测定取样标准偏差，或进行一些有关的化学测试和物理测试，以确定取样常数。
The sampling constants can be estimated by means of sampling relative standard deviation or some relevant chemical and physical informations.
实验结果表明该方法提高了图像的熵和标准偏差。
Entropy and standard deviation are used to evaluate image fusion performance.
实验也证明，取样方差估计值的标准偏差与样本数目的平方根之积可近似为一常数。
It revealed that the product of the standard deviation of the estimated sampling variance and square root of the number of samples was a constant.
一般来说，在仪器开始运行时，进行进样精密度实验，计算其相对标准偏差。
实验结果表明，五氯酚与吸光度成良好的线性关系，平均回收率96.3%，相对标准偏差3.16%。
The concentration of pentachlorophenol have favourable linearization with their absovbency. The average recycle efficienay is 96.3%, and the relalively standard windage is 3.16%.
实验表明试液的物理性质与空白溶液一致，测定结果的相对标准偏差小于2.1%。
The test indicated that the physical properties of test solution is identical with its blank solution. RSD were less than 2.1%.
从实验结果看，测定值的相对标准偏差小于0 7%，相对不确定度小于0 5%。
Under experiment condition, RSD is less than 0.7%, reference uncertainty is less than 0.5%.
该方法实验重现性良好，在溶剂含量小于30%时，该实验的标准偏差小于0.0754，且操作方便，能为气相、液相扩散系数理论分析提供合理的实验数据。
The standard deviation is less than 0.0754 when the solvent content is less than 30%. This method could provide better experimental data for f…
前言： 采用疏基棉分离富集技术，以火焰原子吸收光谱法测定了水中痕量镍元素的含量，相对标准偏差为2.3~2.5，回收率为99.8%~100.1%，取得了比较满意的实验结果。
Content of Ni2+ in water was determined by atomic absorption spectrometry after separating and enriching with sulphdryl cotton. In this method, RSD was 2.3~2.5, and recovery was 99.8%~100.1%.
前言： 采用疏基棉分离富集技术，以火焰原子吸收光谱法测定了水中痕量镍元素的含量，相对标准偏差为2.3~2.5，回收率为99.8%~100.1%，取得了比较满意的实验结果。
Content of Ni2+ in water was determined by atomic absorption spectrometry after separating and enriching with sulphdryl cotton. In this method, RSD was 2.3~2.5, and recovery was 99.8%~100.1%.
应用推荐