查询词典 derivation

The main advantages of the methodare that(1)this method is valid for all kinds of bifurcation pointswith the codimension ≤3;(2)it does not use any informations forsecond order derivatives and does not need the bifurcation point to beknown accurately in implementation;(3)it is sufficient to implementthe method that a standard continuation procedure is only used;and(4)derivation of the method is independent on the asymptotic expan-sions of the bifurcation solutions.

这种方法的主要优点是：(1)适应于一切余维数不超过3的分支点；(2)不需要任何二阶导数的信息，也不必精确地知道分支点的位置；(3)只需使用标准延拓软件就可以实现；(4)方法不依赖于分支解的渐近展式。

Through theoretical derivation and experiment, the improved algorithm based on the common-receiver-point stack traces coherent algorithm was found to be suitable for the complex underground structure.

为此对这种改进的共接收点叠加道相干算法进行了详细的阐述。

This paper presents an analysis of the moment of inertia of coiler in hot strip mill in detail, the derivation of theoretical formula of the inertia and the analysis,taking 2050 hot strip mill for example, of the inertia change rule and the compensation of moment of inertia .

对热轧带钢卷取机的惯性力矩进行了分析，推导出惯性力矩的理论表达式，并结合 2 0 50热轧卷取机分析了惯性力矩的变化规律，对惯性力矩进行了补偿。

The appearance of mutual fund is the result of the changing from the old shared beliefs of investment to the new one, and the derivation from financial intermedium in the condition of market failure. As financial intermedium, mutual fund and market are not only competing with each other, but also commensal.

开放式基金的出现是旧的投资方式的共有信念系统向新的投资方式的共有信念系统变迁的结果；开放式基金是在市场失灵条件下金融中介衍生的结果，作为中介，开放式基金与市场不但存在竞争关系，二者还是"共生"的。

The terms neglected in the derivation of this completely integrable equationshould be considered as perturbations.To study the methods of amplifying or controllingoptical solitons,a perturbation theory is also necessary.

在导出这个完全可积方程的过程中忽略了的项要作为微扰加以考虑，研究对光孤子的放大和控制等手段，也需要使用微扰理论。

Water resources ; dynamic flood control capacity ; computational method ; formula derivation ; static flood control capacity

水资源；动防洪库容；计算方法；公式推导；静防洪库容

The key to the formula derivation is solving an equation of conjugate-contact condition.

明确了盘形刀具齿形计算的关键是共轭接触条件方程的求解，从而进一步论述了圆弧齿轮盘形刀具共轭条件方程求解的新方法。

1H NMR spectroscopic analysis of aromatic protons combined with theoretical analysis of molecular structures proved the existence of two rotational isomers at 300 K, as well as a rapid interconversion equilibrium at 330 K for both compounds Ⅰ and Ⅱ. However, only one conformer exists for compound Ⅲ and puerarin containing 7-phenolic hydroxyl instead of propyl in A-ring as the case of compounds Ⅰ and Ⅱ. Based on UV-Visible absorption data of neutral and basic solutions, and on the density function calculations, the 7-phenolic hydroxyl group in A-ring was found to be more acidic than the 4'-phenolic hydroxyl group in B-ring. The mechanism of derivation reaction and the structure-reactivity relationship of puerarin as an antioxidant were further discussed.

其中7-丙基葛根素Ⅱ属于新型取代衍生物；变温1H NMR和理论计算结果表明，在300 K时，葛根素和4'-丙基葛根素以单一构型存在；而7，4'-二丙基葛根素和7-丙基葛根素则存在两种核磁可分辨的旋转异构体，当温度升至330 K时，两种异构体可以相互转化；通过对比分析葛根素及其衍生物脱质子产物的紫外可见吸收光谱并结合理论计算，确定了A环上7位酚羟基比B环上4'位酚羟基先脱去质子，并由此进一步阐明了葛根素衍生化反应机理以及在抗氧化作用中可能的活性位点和结构活性关系。

Secondly, it analyses the line type between stator and rotor of PDM, gets its derivation bone line equation that satisfies the motor conjugate line type of theoretical sealing and the equation of curved surface, and determines its basic processing method and technology according to the line type characteristic of the spiral curve through analyzing some kinds of typical spiral curve processing methods.

其次，对螺杆钻具定子与转子进行线型分析，推导出其满足理论密封性的马达共轭线型的骨线方程和曲面方程，根据螺杆钻具定子内孔螺旋曲线的线型特点，在分析了几种典型的加工螺旋曲线加工方法的基础上，确定了其基本的加工方法和工艺。

These consistency conditions and their effect on the model's derivation are never given before.

这些自洽条件及它们在模型理论推导中的作用以前未明确给出。

Pradeep Indulkar, a senior official at the Maharashtra state Home Ministry say 101 human were killed and 287 injured.

马哈拉施特拉邦内政部高级官员Pradeep Indulkar称，有101人在冲突中丧生，287人受伤。

Mark Frei, a senior vice president of West, says 80% of West's homeagents have some college education, compared with 30% of those whowork in office-based call centers.

Frei说，该公司80%在家办公的人员都拥有本科学位，而在公司电话中心工作的人中只有30%拥有本科学位。