正子

Lots of investigators' interests, in the problem of an electron bound to a hydrogenic impurity and interacting with the longitudinal optical phonon field of an ionic crystal or a polar semiconductor, have been main- tained over years.

采用线性组合算符和么正变换方法研究强弱耦合情形下，库仑场中束缚光学极化子的基态能量、振动频率和平均声子数与温度的关系。

The ground-state energy and the average number of virtual phonons around the electron of a hydrogenic impurity confined in a parabolic quantum dot are calculated using the squeezed-state variational approach,which is based on two successive canonical transformations and uses a displaced-oscillator type unitary transformation to deal with the bilinear terms,which are usually neglected.

李伟萍 内蒙古赤峰学院物理与电子信息工程系，赤峰 024000肖景林内蒙古民族大学物理与电子信息学院，通辽 028043采用基于逐次正则变换的变分方法，利用单模压缩态变换处理包含声子产生湮灭算符的双线性项，研究了抛物量子点中束缚极化子的性质。

Using this model, we analyze the impacts of the channel on time variation characteristics within a transmission block which destroy the orthogonality of subcarrier and cause serious intercarrier interference.

应用这个模型，分析了信道在一个传输符号内的时变特性带来的影响，它破坏子载波间的正交性，从而引起严重的子载波间干扰。

In C. reinhardtii, isogamous sexual reproduction occurs through "plus" and "minus" mating types.

C。 reinhardtii藻的同配有性生殖通过&正&配子和&负&配子结合产生。

The results of the 60 days experiment showed that both submersed macrophytes(Hydrilla verticillata,Potamogeton malaianus and Vallisneria natans) and floating-leaved macrophytes(Nymphoides indica and Trapa quadrispinosa)had very high removal rates for TN,TP,NO_3~——N and PO_4~——P,and the values exceeded 60%,but Potamogeton malaianus and Vallisneria natans were most effective at removing nutr...

结果表明，沉水植物马来眼子菜、苦草、轮叶黑藻和浮叶植物荇菜、菱等5种水生植物对水体的总氮、总磷、硝态氮和正磷酸盐都有较好的去除效果，去除率在60%以上，且以马来眼子菜和苦草的效果最好，去除率在80%以上。

In this paper, to simplify computation of the function-valued Pade approximants, an efficient Pfaffian formula for the determinants was extended from the matrix form to the function-valued form.

在每一子步中利用过渡矩阵得到摄动基，并对摄动基进行正交化处理来进行Pade逼近，得到的近似解作为下一子步的原始解。

In order to select optimal grid and good computation efficiency to recover the entire signal, aiming at the Ricker wavelet commonly used in forward modeling, we analyzed the alias and signal restoration problem in finite-difference method based on spatial sampling theorem and seismic wave traveling regulation in media with different velocity, to derive quantitative relationship among the modeling grid size, minimum velocity of model layer, and recovered main frequency of wavelet.

为了选择最佳的网格尺寸以及以最小的计算量完整地恢复出信号，针对地震波场正演模拟中经常使用的Ricker子波，根据空间采样定理和地震波在不同速度介质中的传播规律，分析了有限差分算法中的假频和信号恢复问题，推导出模拟网格尺寸、模型地层的最小速度和能够恢复的子波主频之间的近似定量关系，并用数值算例验证了这一关系。

When the loyal child crawls from the television, that male student frightened unexpectedly makes noise all of a sudden for has also pulled the lamp, the so intense fear caused me to jump all of a sudden from the seat runs away the milk tea shop opposite supermarket entrance, outside the sunlight was beautiful, only then I was panic-stricken, the proprietress this time was grinning jeer me to smile, as if loyal child could not threaten her, let me at that time absolutely terrifiedly think her strangeness was and the flat and thin piece has any relations.

当贞子从电视里爬出来的时候，那个男生居然惊吓出声还一下子把灯给扯了，如此紧张害怕使我一下子从位子上蹦逃到了奶茶店对面的超市门口，外面阳光明媚，只有我一个人惊慌失措，老板娘此时正咧嘴嘲我笑，仿佛贞子不会威胁到她，让我当时就毛骨悚然地想到她的诡异是不是和片子是不是有什么关系。

Meanwhile Neptune had kept no blind look-out, and came up to them in the semblance of an old man.

& 光荣的裂地之神对此看得真切，赶至他们中间，以一位老翁的模样出现，抓住阿特柔斯之子阿伽门农的右手，对他说道，用长了翅膀的话语：&阿特柔斯之子，我想，阿基琉斯此时正看着阿开亚人遭受杀屠，全军溃败的惨景；他那颗遭人遗恨的心脏一定在欢快地跳跃。

Because of the non-zero pretzel orbit in sextuploes, an effectivequadruploe field component is present in each sextuploe. And then it perturbs thelattice.

六极子与水平分离闭轨的耦合会产生附加的正四极场，从而扰动全环的Lattice参数，因此PRETZEL方案中六极子不但用来校正色品，还必须用来补偿其对Lattice的扰动。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。