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The dispersion relations of spin waves in a ferromagnetic and antiferromagnetic materials bilayer system are investigated by taking the effect of the magnetic field and spin waves structure factor into account.

重点讨论了在不同的层间耦合下外磁场和横向自旋波结构因子对色散关系的影响。

Spin-orbit coupling is a kind of relativistic effects, which are basic matter foratom and molecular physics. There is significant important in computing spin-orbitcoupling for comprehending and understanding photochemistry reaction,photosynthesis, activity for photobiology of druggery, and noctilucence and so on.

自旋-轨道耦合作用作为一种相对论效应，是原子分子物理学中的基本问题，研究它对我们正确理解和认识光化学反应、光合作用、药物的光生物学的活跃性和生物发光等过程至关重要。

We study the spin Hall conductivity and tunneling spin current in the bilayer two-dimensional electron gas.

我们研究了双层二维电子气中的自旋霍尔电导率以及隧穿自旋流。

According to not complete count, our country chemical fibber, spin, spin industry of machine, garment to came 1991 during June 1994, imported from Italy 2, many 700 equipment, total amount amounts to 263 million dollar.

据不完全统计，我国化纤、纺织、纺机、服装行业在1991年至1994年6月期间，从意大利进口了2，700多台设备，总金额达2.63亿美元。

It's no myth, though it is what physicists call a "fictitious force." If you tie a rock to a string and spin it around, it feels as though some force is trying to drive the rock away from the center of the spin.

不是呀，物理学家称这种力量为"虚拟力"，如果你用绳子绑住一块石头然后旋转它，你就会感到有种力量试图使石头远离旋转中心。

Based on the tensor expression for the Breit-Pauli Hamiltonian,and with the aid of irreducible tensor theory,the theory of relativistic corrections to the non-relativistic energies of many-electron atoms has been generalized to the case in which Racah wave functions are the linear combinations of multi-Slater wave functions,analytic formulism for calculating the relativistic corrections,which include mass correction,one-and two-body Darwin correction and spin-spin contact interaction,has been derived,all th...

以Breit-Pauli哈密顿的球张量形式为基础，借助不可约张量理论，将多电子原子能量的相对论修正理论拓展到了原子的拉卡波函数为多个Slater基函数的线性组合的情形，导出了此情形下多电子原子能量相对论修正(包括相对论质量修正项、单体和双体达尔文修正项、自旋-自旋接触相互作用项)的解析表达式，完成了所有角向积分和自旋求和计算。

MethodsUsing electron spin resonance and spin trapping technology, the scavenging effects of different concentrations of two extracts of Galla Chinensis on DPPH free radical were studied.

方法采用电子自旋共振和自旋捕集技术直接测定不同浓度的五倍子两种方法提取物对DPPH自由基的清除作用。

In part one,because there is no long-range order in one-dimensional(1D)system,generalized second-order Green's function theory isused to 1D spin-1 antiferromagnetic spin chain.The Haldane gapin the excitation spectrum appears naturally in the analytical re-sult;When k is zero,there is a gap 2Δ.

第一部分中，在长程序为零的条件下，我们应用推广的二级格林函数理论，讨论了自旋为1的反铁磁一维链，Haldane能隙在解析结果中自然地得出，在k＝0时，能谱中存在一个2Δ能隙，Δ＝0.5J。

Although spin slows a ball down, it allows us to hita hard serve and use the spin to control the placement.

尽管旋转使球速减慢，但它允许我们大力击球，通过旋转控制球的落点。

Since the reform and opening-up to the outside, its economy and social work havedeveloped rapidly. Its comprehensive science and technology capacity ranks the 3rd nationwide. Its application technology on aviation, machine, electron, instrument, optics, spin, and electric equipments ranks the first class of China. Xi'an is not only an important center of electric transmission and transformation equipment manufacturing, spin industry, airplane manufacturing and horologe industry, but also a significant center of finance, trade, culture, education, and tourism.

改革开放以来，西安的经济建设和社会事业得到了快速发展，西安的科技综合实力位居全国第三位，其航空、机械、电子、仪表、光学、纺织、电力设备等应用技术居全国前列，是中国重要的成套输变电设备制造业、纺织工业、飞机制造工业和钟表工业基地之一，又是国家主要的金融、贸易、文化、教育和旅游中心之一。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。