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D by using the first derivative spectrum and REP, and the properest models were index(R2=0.9487)and parabola (R2=0.9392) respectively. D 是可行的;最适模型分别为指数(R2=0.;9487)和抛物线(R2=0
The first derivative spectrum is more correlatively with the biophysical parameter including chlorophyll density and LAI. 综合分析，孕穗期是利用高光谱遥感进行作物长势和养分诊断研究的最佳时期。
Keywords synchronus fluorimetry First derivation spectrum Rivanol; 同步荧光;一阶导数光谱;利凡诺;
first derivative spectrum 一级导数光谱
A mark used as a superscript to indicate the first derivative of a variable. 撇号置于右上角的符号，用以标明变量的第一个导数
Determination of Sulfamethoxazole and Trimethoprim in compound Sulfamethoxazole tablets with first derivative spectra methods 一阶导数光谱法测定复方磺胺甲噁唑片中磺胺甲噁唑和甲氧苄啶含量
First derivative spectra 微分光谱
The second-class derivative spectrum method was u sed to determine the amygdalin contents of Prunus persica(L .) Batsch. from three different areas (Fujian, Anhui, Xinjiang). 采用二阶导数光谱法直接测定三种不同产地(福建、安徽、新疆)桃仁中苦杏仁甙的含量。
Peakon solutions have discontinuous first derivative on the peaks and can be described by Dirac function. Peakon解在波峰处一阶导数不连续;但可用D irac广义函数表示.
To determinate Vitamin E (VE) in liposomes,we compared first derivative UV spectrophotometry with fluorophotometry. 为测定包裹维生素E（VE）的脂质体中VE的含量，比较了荧光法、一阶导数紫外光谱法这两种方法。
The limit of this quotient as the time of travel becomes vanishingly small; the first derivative of distance with respect to time. 瞬时速度当运动时间小到可以忽略时,此商数的极值;距离相对于时间的一阶导函数。
A first derivative spectrophotometric method is presented for the determination of fleroxacin(FLX) in tablets,capsules and powder for rejection. 用一阶导数分光光度法测定了氟罗沙星片剂、胶囊和粉针剂中氟罗沙星的含量。
METHODS Vitamin A extracted from ChengzhiYuyou by using cyclohexane was determined by using the first derivative spectrophotometry. 用环已烷萃取橙汁鱼油中的维生素A后,用一阶导数分光光度法测定其含量。
It also testifies the intermediate variate in the system is servo valve loading pressure; compensator is a first derivative element. 可以证明本系统的这种观测量是伺服阀的负载压力,而所谓补偿器是一个一阶微分环节,因而容易实现。
Two methods for the rapid determination of 10-HDA in royal jelly with the def-frential spectrophotometry and the first derivative spectrophotometry are presented. 本文提出了用差示分光光度法和一阶导数分光光度法测定蜂王浆中蜂王酸的含量。
It first approx imates the discrete points by cubic spline and gets the first derivative of the given discrete points, then approximates the cubic spline by biarc curve. 先对离散点列用三次样条曲线插值,求出型值点的一阶导数,然后对三次样条曲线用双圆弧逼近。
Sceond-order derivative spectrum 二阶导数谱
The solution and positive solution are considered for a class of second-order quasilinear equations with first derivative,where the nonlinear term is allowed to be singular. 考察了一类含有一阶导数的二阶拟线性方程的解和正解,其中允许非线性项是奇异的。
derivative -ratio derivative spectrum 导数-比导数光谱
The powder pharmaceutical samples of sulfaguanidine are analyzed nondestructive by conventional and first derivative near infrared diffuse reflectance spectra. 用常规和一阶导数近红外漫反射光谱法非破坏分析了粉末药品磺胺脒。