first derivative的例句大全

Making use of the fourth-order compact difference formula of the first derivative term, anew high accuracy difference scheme for the two-dimensional convection reaction equation is proposed.

利用一阶偏导数项的四阶紧致差分算子，直接推导出了数值求解二维对流反应方程的一种新的高精度紧致差分格式。

The doxycycline hydrochloride and its preparations were determinated by first derivative differential pulse polarography.

建立了盐酸多西环素及制剂的一阶导数差示脉冲极谱测定法。

a new method for the determination of dissociation consents of chrome azurol s is proposed based on its first derivative spectra in buffer solution of different ph. the calculation formula are developed.

研究了铬天青S在不同pH缓冲溶液中的吸收光谱及一阶导数光谱，并据此拟定出一个测定各级离解常数的方法，推导出计算公式。

study on the first derivative stop-flow method to determine reduced glutathione

一阶导数停流法测定还原型谷胱甘肽的方法研究

through the theory formula deduction, we deducted the inversion formula of 2. 5d fault model based on the first derivative formula of the gravity anomaly of the vertical fault model.

经过理论公式的推导，利用直立断层重力异常一阶导数公式构造了似二度体断层反演公式。

Meanwhile, the internal force vector and the element tangent stiffness matrix could be obtained from calculating directly the first derivative and second derivative of the element strain energy with respect to the nodal variables, respectively.

同时，采用矢量型转动变量，可以直接从计算单元应变能泛函对节点变量的一阶和二阶偏微分得到单元内力矢量和切线刚度矩阵。

It was also found that first derivative spectrometric value of polysaccharide-phenol-sulfuric acid reaction system is directly proportional to the content of polysaccharides.

本文研究还发现多糖苯酚硫酸显色反应体系的一阶导数光谱值与多糖含量成正比，据此建立了苯酚硫酸显色导数光谱分析多糖的方法。

the first derivative high-speed pulse polarography was developed for the determination of the prednisone acetate and its preparation.

本文利用一阶导数高速脉冲极谱法定量分析醋酸泼尼松及其制剂。

Identification of spillage oil at sea with first derivative fluorescence spectra was discussed.

一阶导数荧光光谱鉴别海面溢油，其光谱特征用模糊数学方法作了分析；计算了各种油之间的模糊相似程度；

Spectra of 700 typical samples were collected to develop the calibration models, among which the raw spectra were pretreated with first derivative and partial least square.

收集700个具有代表性样品的光谱，建立其相应指标的近红外模型。

convergence of the family of deformed euler-halley iterations with parmeters under the first derivative condition

一阶导数条件下带参数的修正型Euler-Halley迭代族的收敛性

the distribution of camptothecin and its ring opened form was studied by first derivative ratio spectrum of uv vis absorption and fluorescence spectrometry in different ph aqueous buffer solutions.

为了研究喜树碱的药理性质，用比导数荧光光谱和紫外吸收光谱法分析了喜树碱在不同pH介质中的形态分布。

the correlation of leaf first derivative spectra to lnc indicated that highly significant correlation were reached at many bands located in visible and red edge regions, correlation spectrum presented obvious peak-valley characteristics.

叶片氮含量与一阶导数的相关关系表明在可见光至红边区众多波段均达到极显著相关水平，相关系数呈明显的峰谷特征。

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Dirac 广义函数表示.

The Tesla Roadster Sport is the first derivative of Tesla's proprietary, patented powertrain.

特斯拉跑车的运动,是特斯拉的专利, 专利的一次微分动力系统.

At the same time, the inversion algorithm of Central Loop Transient Electromagnetic Method ( CLTEM) for all time apparent vertical conductance and apparent depth was proposed by using EMF and its first derivative.

通过利用感应电动势及其一阶导数表达式作简单数学推导，给出了全区视纵向电导与视深度的反演算法。

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

for each cyclic dynamic stress, the incremental strain is obtained in terms of the first partial derivative of the known formula for the uniform load with respects to the cyclic number.

对每一动应力循环，以已有等幅荷载经验计算公式对循环次数的偏导构造残余应变的增量模型，并考虑了动压应力对残余应变增长的控制作用。

determination of metronidazole in metronidazole gargles by first order derivative spectrometry

一阶导数光谱法测定甲硝唑漱口液中甲硝唑的含量

method the fluconazole content in the vaginal suppository was determined by first order derivative spectrophotometer and its efficacy was observed in 60 patients with monilial vaginitis.

方法以一阶导数光谱法测定氟康唑阴道栓中氟康唑的含量，并对60例霉菌性阴道炎患者进行临床观察。