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1)  second derivative plate
二阶导数图版
1.
The first and second derivative plates of concave pressure build-up curve are presented in this paper.
本文提出了凹型压力恢复曲线的一阶导数图版和二阶导数图版
2)  first derivative plate
一阶导数图版
3)  Second-order epi-derivatives
二阶上图导数
4)  second derivative
二阶导数
1.
A class of stiffly stable k-step second derivative methods of order k+2;
一类k步k+2阶的二阶导数方法
2.
The infrared diffuse reflectance spectra of PP pellets and powder were directly determined, and then pretreated through multiple scattering calibration ( MSC) , first derivatives ( number of spectrum to absorption of diffused reflection spectrum), second derivatives (number of spectrum to absorption of diffused reflectio.
采用一阶导数、二阶导数、多元闪射校正(MSC)等方法进行光谱预处理,并用局部权重回归(LWR)和偏最小二乘法(PLS)建立平均相对分子质量(和)的校正模型。
3.
The second derivative item is introduced to control diffusion along coherence orientation in coherence enhancing diffusion algorithm (CED).
为了对原始光学相干层析图像进行预处理以有效地去除图像中的噪声及散斑、增强图中的层状结构,并更好地保护图像中的层状结构,进而更准确地定量测量图像中有重要意义的层状结构的光程信息,提出在相干增强各向异性扩散(CED)算法中引入二阶导数项以控制沿相干方向的扩散强度,并将引入二阶导数项的相干增强各向异性扩散算法应用于不同样品的光学相干层析图像。
5)  secondary derivative
二阶导数
1.
Determination of phenylephrine hydrochloride in Biling nasal drops by secondary derivative spectrophotometry;
二阶导数光谱法测定鼻灵滴鼻剂中盐酸去氧肾上腺素的含量
6)  second derivative spectra
二阶导数谱
1.
Several kinds of powdered milk were identified fast and nondestructively by Fourier transform infrared spectroscopy (FTIR) combined with second derivative spectra.
采用红外光谱法 (FT IR)并结合二阶导数谱对几种奶粉产品进行了无损快速鉴别。
补充资料:二氧化双环戊二烯B阶树脂模塑料
分子式:
CAS号:

性质:又称二氧化双环戊二烯B阶树脂模塑料。以二氧化双环戊二烯B阶树脂为基料配制的能采用模塑方法成型的配混料。产品性能为:弯曲强度110MPa,冲击强度5.4kJ/m2;马丁耐热240℃;体积电阻率1.3×1016Ω·cm,介电强度24.5MV/m。由二氧化双环戊二烯B阶树脂,用石英粉等作填料,再加脱模剂配混制得。可用模塑法制成耐热、耐候制品用于军工和民用方面。

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