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1)  two-center overlap integrals
双中心重叠积分
1.
So up to now,it is much significant to study two-center overlap integrals over Slater type atomic orbitals.
把Monte Carlo方法引进STO双中心重叠积分的计算中,结果表明,它不仅计算简便、快速、很容易在计算机上实现,而且具有较高的精确度,有望推广应用于更复杂的多中心分子积分中。
2)  Overlap integral
重叠积分
1.
We have calculated interatomic charge density overlap integrals of all homogeneons rare gases in this paper.
本文对相同稀有气体原子间电荷密度的重叠积分进行了全面计算。
2.
The overlap integral between lightwave and microwave were calculated.
文中对反映光波与微波相互作用强度的重叠积分进行了详细计算,并对器件性能的改变进行了比较。
3.
In this paper,the overlap integral factors in polymeric waveguide modulators are calculated.
本文对有机聚合物电光波导调制器的重叠积分进行了详细计算,着重讨论了器件的几何参数对重叠积分的影响。
3)  two center exchange integral
双中心交换积分
1.
Formulas for two center exchange integrals with Slater type functions are derived and a special case is discussed.
采用复型Slater轨道,推导了双中心交换积分公式,讨论了交换积分的一种特殊情形。
4)  central overlap technique
中心重叠法
5)  angular overlap integral
角重叠积分
6)  doubly integrating
双重积分
1.
The design procedure of the two-degree-of-freedom IMC-PID controller for doubly integrating plants with delay is proposed based on the internal model control theory.
针对一类具有时滞的双重积分对象,根据内模控制理论提出一种二自由度IMC-PID控制器设计方法。
2.
Two new two-degree-of-freedom control structures were proposed for doubly integrating plants with time delay, in one of which the setpoint tracking controller is designed by using the H_2 optimal performance specification and in the other, a conventional derivative controller is utilized for the setpoint tracking.
针对具有时滞的双重积分对象,提出了两种新颖的二自由度控制结构。
补充资料:多中心积分
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性质:在求解哈特里-福克-罗特汉方程时,会遇到下述电子排斥积分(μv∣λσ):即(μv∣λσ)=∫ ∫φμ(1)φv(1)(2) φσ(2)dV1dV2。仅由一个原子提供原子轨道所构成的积分如(μμ∣μμ)称为单中心积分(monocenter integral);由两个原子提供原子轨道则构成双中心积分,如(μμ | νν)和(μν∣μν);若原子轨道由三个或四个原子提供,就称为多中心积分。多中心积分的存在使得量子化学计算变得极端困难,可以说,对多中心积分算法的研究推动着量子化学计算方法的发展。为解决多中心积分问题,已出现了一系列自洽场计算方法。

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