精细结构

Cornea is one of the most importantparts of human body′s eyes.

中文摘要：角膜是人眼的一个关键部分，了解角膜的精细结构具有十分重要的意义。

In this paper a full density matrix treatment is adopted to deal with the interaction between long-pulse,circularly-polarized light and the sodium atoms.

采用密度矩阵方法来处理长脉冲光与钠原子的相互作用，求解24能级钠精细结构的布洛赫方程，给出参与跃迁的每个态密度随时间的演化曲线。

In enzymatic depilation process,bright-line structure of BM disappeared.

研究了猪皮表皮和基底膜的精细结构及其在酶作用下的变化。

The fine structure Hamiltonian for Hydrogen-like atoms is derived using the nonrelativistic approximation of the Dirac equation for one electron moving in the Coulomb field.

从Coulomb场中运动的电子的Dirac方程出发，取其非相对论极限导出了类氢离子的精细结构哈密顿的表达式。

The contributions of spin doublets for the ground-state energy levels were studied.The results show that the contribu...

在此基础上，进一步研究了自旋-自旋相互作用对红宝石晶体的光谱精细结构和零场分裂参量的影响，发现自旋-自旋相互作用对零场分裂参量的影响是不可忽略的。

The electromagnetically induced left-handedness in a four-level atomic system associated with a pair of upper excited hyperfine levels has been investigated.

研究了具有超精细结构的四能级原子系统在电磁感应下的左手效应。

The effects of the fine structure of the ground state levels on the spontaneous emission spectrum of an atom are studied in the first model.

在第一个模型中，研究了原子的基态能级的精细结构对自发辐射谱的影响。

The non-relativistic energies and wave functions were determined by Rayleigh-Ritz method. The relativistic effects, including the correction to kinetic energy, the electron-electron contact term, and the orbit-orbit interaction, Darwin term, and mass-polarization effect on the energies were calculated by using first-order perturbation theory. In order to obtain a more accurate result for the larger Z system, the quantum-electrodynamics correction should be included. This correction to energy can be evaluated for the valence electron by using a hydrogenic formula with an effective nuclear charge, Z. The ionization potential, the excitation energies and the fine structure split-tings for a lithium-like ion with higher nuclear charge (Z=26) were calculated.

非相对论能量用Rayleigh-Ritz变分法确定，包括动能修正、电子—电子接触项、轨道—轨道相互作用项以及Darwin项的相对论修正和质量极化项由全实加关联波函数的一阶微扰给出，量子电动力学修正由有效核电荷方法和类氢公式计算；给出了较高核电荷(Z=26)类锂体系1s^2nl组态的电离能、激发能和1s^2np组态的精细结构劈裂。

In an elegant structural study, a team of Baylor College of Medicine and German researchers explain how hemocyanin is activated – a finding that could lead to a better understanding of both ends of the skin and hair color spectrum.

在一项精细结构研究中，来自贝勒医学院和德国的研究者们对于血蓝蛋白如何被活化做出了解释：一个新的发现使得我们对于皮肤和头发光谱两者都有了更深刻的理解。

In general, the hyperfine splitting is measured by heterodyne technique.

一般而言，超精细结构的间距是以拍频的方法量得。

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％。