1) perturbative expansion method
微扰展开法
1.
Effective dielectric response of ellipsoid composites in which the dielectric function of the grains have the form of(ε_c)～=ε_c +χ_c｜E_c｜~β)embedded in a host medium is investigated in dilute limit based on perturbative expansion method,and general expressions for the effective linear dielectric function and(β-1)-order nonlinear susceptibility of the two-phase system are derived in this paper.
利用微扰展开法讨论了任意阶弱非线性椭球颗粒复合体系(假定颗粒组分的介电函数随场变化,表示为cε~=cε+cχ|Ec|β)的有效介电响应,导出了稀释极限下两组分椭球颗粒体系的有效线性和有效(β+1)次非线性系数的一般表示式。
2) background fields
微扰展开
1.
We present a new method of perturbative expansion in quantum chromodynamics with gluon background fields,which can be used at high,intermediate and low energy scales,and the corresponding Feynman rules are given.
对于具有胶子背景场的量子色动力学，从变分微扰论出发，通过对场作标度变换，把格林函数按一个合适的参数展开，提出了一种既适合于高能区也适合于中低能区的新的微扰展开方法，并给出了相应的费曼规则。
4) Perturbation expansion method
微扰展式方法
5) perturbational expansion form
微扰展式
6) perturbation
[英][,pɜ:tə'beɪʃn] [美]['pɝtɚ'beʃən]
微扰法
1.
The Foresee of Chaos of Planar Josephson Equation with Melnikov Function and Perturbation Method;
通过Melnikov函数和微扰法来预测平面Josephson方程的混沌
2.
The binding energies of the ground state and the low-lying excited states of hydrogen-like impurity in a InAs/GaAs quantum dot are investigated by applying the effective mass approximation and the perturbation.
在有效质量近似下,采用微扰法研究了InAs/GaAs量子点内类氢杂质基态及低激发态的束缚能。
3.
First taking the energy of hydrogen atom as zero level of energy, the energy levels of 2s-4f states of helium atom are calculated by means of perturbation, and then taking the energy of helium atom as zero level of energy, the energy levels of 2s-4f states of lithium atom are calculated by means of perturbation.
首先以氢原子的能量为零级近似能量,用微扰法计算了氦原子的2s～4f态能量,然后以氦原子的能量为零级近似能量,用微扰法计算了锂原子2s～4f态的能量。
补充资料：可降解淀粉微球和生物降解白蛋白微球阻滞法
可降解淀粉微球和生物降解白蛋白微球阻滞法
介入放射学技术。介入性局部化疗之前，把二者注入靶动脉，可暂时减少动脉血流，再行化疗药物灌注，以减少血液冲刷，保持局部化疗药物浓度的技术。与其他中期和长期栓塞微球不同，DSM和BAM仅造成数十分钟的血流量减少，待其被降解后血流可恢复至以前水平。
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参考词条