查询词典 first-order derivative

A water soluble polyhydroxy derivative of1,4| diazine has been isolated from Panax pseudoginseng var notoginseng for the first time.

从三七水溶性成分中首次分离得到一个多羟基吡嗪衍生物。

A series of diazonium salts of 4-(N-methyl-N-phenylamino)-3-amino-1,8-naphthalic anhydride 5a, its naphthalimide derivative 5b, and 5e were designed and synthesized,and it was the first time to discover that aromatic radical-induced intramolecular aromatic 1, 5-hydrogen transfer was also involved in the nitrogen-contianed system during Pschorr cyclization.

实验设计合成了4--3-氨基-1，8-萘酐的重氮盐5a、其衍生物N-丁基-4--3-氨基-1，8-萘酰亚胺的重氮盐5b和N--4--3-氨基-1，8-萘酰亚胺的重氮盐5c，并首次发现了通过普朔尔环化反应以氮甲基化的氮为桥原子的体系存在着芳香自由基诱导的芳香1，5-氢转移。

This formula first scales the magnitude to become the average arc length, and then it scales again to account for the other directional derivative.

这个公式首先将量级缩入成平均弧长，然后又在另一方向的导函数上进行缩放。

Then after the author researches the interaction problem of the partial derivative operators with respect to the two points P and Q, analytical expressions as well as series expansions of the kernel function within disturbing gravity field elements are determined, and their explicit expressions which can be applied practically are given for the first time.

深入研究了关于 P 和 Q 两点局部导数算子的相互作用问题，得到了扰动场元之间核函数和协方差函数的解析与级数展开式，首次给出了较为实用的明晰表达式。

By the procedure, we first use the cosine values of the angle between view vector and normal vector on each vertex as the texture coordinates, through calculation of the dot product of the two vectors. The derivative of radial curvature on the model surface is used as the second pass texture mapping coordinates, by a calculation using Euler formula.

该方法首先通过模型顶点的视线向量和法线向量的点乘积计算其夹角的余弦值，作为第一步的纹理坐标进行映射；再通过欧拉公式计算径向曲率及其方向导数值，作为第二步映射的纹理坐标。

"Bailout" was listed fourth after the bank bailout was one of the first acts of the financial crisis,"evacuee" came fifth in the wake of Hurricane Katrina devastating New Orleans, and "derivative" featured sixth.

"救市"被列为第四，排在紧缩银根后，是金融危机的首批行动之一，"被疏散者"排在第五位，在卡特里娜飓风破坏了新奥尔良之后，"衍生"成为第六位。

"Bailout"was listed fourth after the bank bail out was one of the first acts of the financial crisis,"evacuee" came fifth in the wake of Hurricane Katrina devastating New Orleans, and "derivative" featured sixth.

"援助"位居第四，这个词指的是短信危机发生后各国对银行实施救援的第一反应；"疏散者"名列第五，该词与新奥尔良遭遇的卡特里娜飓风有关；"短信衍生产品"位居第六。

Bailout was listed fourth after the bank bailout was one of the first acts of the financial crisis,"evacuee" came fifth in the wake of Hurricane Katrina devastating New Orleans, and "derivative" featured sixth.

"援助"位居第四，这个词指的是金融危机发生后各国对银行实施救援的第一反应；"疏散者"名列第五，该词与新奥尔良遭遇的卡特里娜飓风有关；金融衍生流氓高手ii最新sodu！

Bailout was listed fourth after the bank bailout was one of the first acts of the financial crisis,"evacuee" came fifth in the wake of Hurricane aion kinah Katrina devastating New Orleans, and "derivative" featured sixth.

"援助"位居第四，这个词指的是金融危机发生后各国对银行实施救援的第一反应；"疏散者"名列第五，该词与新奥尔良遭遇的卡特里娜飓风有关；"金融衍生产品"位居第六。

Design parameter based on finite element model updating is part of an inverse problem of structure dynamics. Features of the structure are used as a function of design parameters. Parameters are updated based on the first derivative. This paper presents a new method which treats the model updating as a positive problem.

设计参数型有限元模型修正属於结构动力学反问题，其理论基础是将结构的特徵量视为设计参数的函数，然后依据特徵量对设计参数的一阶导数信息进行迭代求解。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。