由求解失效概率的改进一次二阶矩法出发，给出了失效概率对中间变量分布参数偏导数的计算公式；
On the basis of the advanced first order and second moment method, the partial derivatives of the failure probability to the distribution parameters of the process variables were formulated.
对利用差谱—二阶导数分光光度法直接测定强干扰基体中微量组分的原理和实验方法进行了探讨。
A new method for determining directly trace component in interfering base by absorbance subtraction -second derivative spectrophotometry is proposed.
目前，红细胞边缘形态的检测一般都是利用传统的边缘检测方法，如边缘临近一阶或二阶方向导数法，利用简单的方法来检测边缘。
At present, the methods of edge detection of erythrocyte are using traditional theory such as edge one-order or second-order orient differential coefficient and using simple methods to detect edge.
采用傅里叶变换红外光谱法(FTIR)获得了六种婴幼儿奶粉的红外光谱及其二阶导数谱。
Six kinds of infant powdered milk were identified by Fourier transform infrared spectra (FTIR) and their corresponding second derivative infrared spectra.
表明二阶导数光谱法分析肝纤维化病变的血清荧光光谱可能是有效的。
The results indicate that the derivative spectra of serum is an effective method to analyse the process of liver fibrosis.
用薄层色谱法鉴别乳膏中的黄芩苷，并用二阶导数光谱法测定其含量。
The baicalin in cream was identified by TLC method and the content of baicalin in cream by second derivative spectrometry.
结论制剂处方及制备工艺合理，二阶导数光谱法重现性好，适于该制剂的质量控制。
Conclusion the formulation and preparation technique are rational and the quality is easy to handle by the method of second derivative spectrometry.
本文应用二阶导数紫外分光光度法考察了苯呋洛尔溶液体外经皮渗透性。
Second-order derivative UV spectroscopy was used to measure the transfer of befunolol - HCl across full - thickness rabbit skin in vitro.
采用二阶导数光谱法，试样不需分离，直接测定混合甘油酯中一酯、二酯、三酯的含量。
Use is made of second derivative spectrometry, the quantity is directly determined of the monoesters, diesters and triesters in glyceride, without the samples being separated.
方法二阶导数差示脉冲极谱法。
METHODS The Secondary derivative differential pulse polarography was developed.
采用傅里叶变换红外(FTIR)光谱法并结合二阶导数技术，测定了中药天然麝香及其伪品的红外光谱。
Standard nature musk and false nature musk were identified by Fourier transform infrared spectroscopy (FTIR) combined with derivative spectra in the present article.
采用傅里叶变换红外(FTIR)光谱法并结合二阶导数技术，测定了中药天然麝香及其伪品的红外光谱。
Standard nature musk and false nature musk were identified by Fourier transform infrared spectroscopy (FTIR) combined with derivative spectra in the present article.
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