查询词典 derivative

Using the domain derivative of the far-field pattern for eddy-current inverse problem with Dirichlet boundary condition,a new algorithm to recover the shape of cracks was constructed and some numerical examples were given.

运用Dirichlet边界条件下涡流检测反演的远场区域导数，构造了反演缺陷形状的一种新算法，并且给出了二维及三维的算例，数值反演的结果与实际缺陷吻合得较好。

Compared with the known results,the nonlinearity is allowed to change sign and is involved with the first-order derivative explicitly.In particular,the boundary condition includes the Dirichlet boundary condition and Robin boundary condition.

与现有工作相比，我们所考虑的动力方程不但非线性项可变号，而且包含一阶导数项，所考虑的边值条件更具一般性，比如可以包含Dirichlet及Robin边值条件等。

As a result, it is interesting that all of the different displacement derivative BIE can be transformed to the natural BIE.

从而建立了这些位移导数边界积分方程之间的转换关系，它们均可以归结为自然边界积分方程。

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。

But for the middle and large scale problems, the computation cost by symbolic differentiation is very expensive. When the direction derivative is evaluated, the computation cost by divided difference can be reduced, but it is only one kind of approximate computation.

对于大中规模问题来说，使用符号微分，成本昂贵，有时甚至不可行，在计算导数的方向梯度时，利用差分法虽然可以降低计算成本，但得到的是近似值，而且确定恰当的差分区间也很困难。

Talanton {tal'-an-ton} from a presumed derivative of the original form of tlao (to bear, equivalent to 5342);; n n AV - talent 15; 15 1 the scale of a balance, a balance, a pair of scales 2 that which is weighed, a talent 2a a weight varying in different places and times 2b a sum of money weighing a talent and varying in different states and according to the changes in the laws regulating currency 2b1 the Attic talent was equal to 60 Attic minae or 6000 drachmae 2b2 a talent of silver in Israel weighed about 100 pounds (45 kg) 2b3 a talent of gold in Israel weighed about 200 pounds 91 kg

相关经文回前一页 5007 talanton {tal'-an-ton}源自 tlao (负荷，相当於 5342)原型之推测引申字；； n n AV - talent 15； 15 1 天平的秤，秤盘，天平 2 称重，一个他连得 2a 因不同地方及次数而改变的重量 2b 和一个银子等重的总金额，且因依据管理货币之法律中的小币值在不同国而有所不同 2b1 他连得相等於 60 弥拿或是 6000 锥克玛 2b2 在以色列重量度量衡中，一个银的他连得大约是100 磅(45 公斤) 2b3 在以色列量量度量衡中，一个金的他连得大约是 200 磅 91 公斤

A novel method to prepare polyrotaxane in solution by α-cyclodextrins and dumbbell-like poly derivative with reversible acylhydrazone bond and big end stopper (2',4-dinitrophenyl) is described.

合成了具有可逆酰腙键的2，4-二硝基苯甲醛封端的哑铃型聚乙二醇衍生物。

Experiments and application situation on determination of dysprosium by fluorescence analysis and derivative spectrum analysis method are reviewed.

对近10a来的用荧光法和导数光谱法测定镝的研究及应用进行了综合报道。研究了在聚乙二醇2000 硫酸铵铝试剂双水相体系中，铝试剂作萃取剂，对镧、镨、镝的萃取行为。

The laser induced fluorescence and its derivative spectra of dysprosium europium, samarium, and terbium in the system of TFATOPO-Nongru-100 was studied and the method for the simultaneous determination of the four rare earths was developed.

我们利用自己编写的数字微分软件，研究了TFA-TOPO-农乳-100体系中Dt、Eu、Sm和Tb的激光诱导荧光及其导数荧光光谱，拟定了同时测定四个稀土元素的分析方法。

Although there were few reports on electroluminescence devices of perylene derivative, there is no report about carrier transport properties.

值得注意的是，相关的报导只注重在元件结构及发光特性上，却没有探讨有关载子的传输特性。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。