隙的

In this thesis the process of constructing the non-perturbative Hamiltonian theory is de-scribed and is applied to estimate the vacuum condensate. It contains the following contents:At the very beginning, by using the path integral method and eliminating the gluon freedom, aGCM action 〓 of current quarks including lower order current-current coupling was derivedfrom the QCD Lagrangian and the effective Hamiltonian operator that could hardly be doneby the normal methods was derived. After doing this, the broken vacuum is introduced whichincludes quark-antiquark condensate through the generalized Bogoliubov-Valatin transformation,the effective Hamiltonian of constituent quark was derived. The detailed formulas containingthe spatial current-current coupling term for the effective Hamiltonian and gap equations wasworked out by parameterizing the correlation kernel as a quadratic potential. And then, the gapequation was solved and the quark-antiquark condensate of vacuum was studied both in the casesof instantaneous interaction and retarded interaction. In the end, the effective Hamiltionian withtwo-body quark-quark interaction was derived with one-body approximation, and with the helpof the functional integral method the coupling non-linear dynamic equations for systems withnuclear matter was derived. Finally, these equations were solved by selfconsistent method andthe effect of nuclear matter on vacuum condensate was studied. The spatial current-current coupling term is too difficult to handle, hence the correlationkernel is assumed to be not important and usually omitted in the pure vacuum condensate, andthe instantaneous interaction generally is adopted. Retaining the spatial current-current termand partial retardation effect, the quark pairs condensate in pure vacuum was studied, and theeffect of quark mass was also studied. At present, little study is focused in the case with nuclearmatter and spatial current-current term also omitted. Under the approximation with partialspatial current-current term, the effect of nuclear matter on vacuum condensate was studied.

本论文描述了量子色动力学整体色对称模型哈密顿量方法的构建过程，得到了反映正反夸克对凝聚真空结构的关于组分夸克的有效哈密顿量算符，它隐含了胶子作用，并且准确至流-流耦合项；接着，通过参数化哈密顿量中的夸克作用关联核，导出平方禁闭势参数化选择的哈密顿量的具体公式和能隙方程；随后，应用公式，编程求解，考察了瞬时作用下和部分延迟作用下真空的正反夸克对凝聚，在计算中保留了空间流-流耦合作用；之后，导出瞬时势和延迟势下包含二体作用项的哈密顿量公式，并采用单体化近似，通过泛函变分方法得到核物质存在时耦合的非线性动力学方程；在保留部分空间双流耦合作用的近似下，求解核物质的动力学方程，考察核物质密度对真空凝聚的影响，以往考察真空凝聚，对关联核的选用，由于空间流-流耦合项不易处理，也认为作用不大，常忽略该项，并且常采用瞬时作用；本文保留空间双流项和部分延迟作用，考察了真空情形的夸克对凝聚，还考察了夸克质量对纯真空凝聚的影响，以往对核物质存在情形的真空凝聚考察很少，也都忽略空间流-流项，本文在考虑部分空间流-流项近似下，考察了核物质存在对真空凝聚的影响。

They disported themselves with the shattered pigeon-house, the broken weathercock, the loose tiles, and unshapely chimneys; they rattled at the window-panes, and whistled in the crevices; they mocked the feeble building from foundation to roof, and battered and banged and tormented it in their fierce gambols, until it trembled and rocked with the force of their rough play.

阵风戏弄着残破的鸽子笼、折断的风信鸡、松动的瓦片和畸形的烟囱；阵风格格地敲打窗扉，在隙缝里嘘嘘呼啸；阵风把这虚弱的建筑物从基础一直嘲弄到屋顶，在它们猛烈的游戏里乒乒乓乓的折磨它，直搞得这房于随着阵风粗暴捉弄的力量而战战兢兢、摇摇晃晃。

So, the aromaticity of acenaphthenyl groups in C_2 gum should be the least. In order to explain the reason, quantum chemical calculation is utilized. The optimized geometrical structrures of condensed aromatics in C_1 gum, C_2 gum and C_3 gum are calculated at B3LYP/6-31G* levels. We find that some phenyl groups in acenaphthenyl groups are coplanar and have the largest conjugated structure.

为了解释其原因，我们利用量子力学方法进行了计算，研究了三种稠环基团在B3LYP／6-31G*基组水平下优化得到的几何结构，发现苊式多苯基苯基中的萘环和中间的苯环共面，电子离域性最大，而其他二者所有苯环都不共面，发生了明显地扭曲；同时，在优化几何结构的基础上，对三种化合物进行了前线分子轨道的分析，利用密度泛函理论方法(density function theory，DFT)计算了稠环基团的最高占有轨道和最低未占轨道之间的能量差，即能隙，发现C_2胶上苊式多苯基苯基的Eg最小，解释了C_2胶具有最好的辐射保护效果的原因。

At first it looked like a vast blue fort or Valhalla; but when they began to tuck the coarse meadow hay into the crevices, and this became covered with rime and icicles, it looked like a venerable moss-grown and hoary ruin, built of azure-tinted marble, the abode of Winter, that old man we see in the almanac ——his shanty, as if he had a design to estivate with us.

最初，我看这很像一个巨大的蓝色的堡垒，一个伐尔哈拉殿堂；可是他们开始把粗糙的草皮填塞到隙缝中间去了，于是上面有了白霜和冰柱，看起来像一个古色古香的，生满了苔藓的灰白的废墟，全部是用蓝色大理石构成的冬神的住所，像我们在历本上看到的画片一样，——他的陋室，好像他计划同我们一起度过夏季。

In order to clearly understand the dynamics mechanism about broad-leaved Korean pine forest and simulate its dynamics mechanically, a simulation model is demanded through which we can simulate the long-term dynamics of BKPF under different pine cones picking intensity and hunting for grey squirrels in different intervals. By considering the effective dispersal of seeds by animals, the human disturbance and the masting behavior of Korean pine, a new gap model integrated seed-bank and regeneration dynamic model, based on the classical gap model, is established.

为了能够充分理解阔叶红松林的动态机制，准确模拟东北阔叶红松林的动态变化，探索出既能够保护好又能够利用好阔叶红松林的新途径，根据阔叶红松林的动态机制，在经典林隙模型的基础上，添加考虑了阔叶红松松林中动物对种子的有效传播、人工采摘干扰以及红松的结实特性，建立了红松种子库及其更新的动念模型更新子模型，使模型更能够反映阔叶红松林中的动态机制。

Tubes can be cuffed or uncuffed. Cuffed tubes are appropriate for adults andolder children. Uncuffed tubes are used for younger patients (those requiring atube smaller than 5.5 mm).1,2 After inserting a cuffed tube, you must inflate theballoon on the distal end to create a seal between the tube and the tracheal lumen.This seal will prevent leakage of air and aspiration of gastric contents.

可以使用有套囊的插管或无套囊的插管，有套囊的插管适用于成人或年长儿无套囊的插管，无套囊的插管则用于年幼儿（插管直径小于5.5 mm）插入有套囊的插管后，应注入气体使套囊膨胀，封闭气管和插管之间的腔隙，这可以避免漏气及胃内容物的吸入。

It indicated that the multiple-layered films were mainly composed by C-F, C=C and Si-O bonging, a little Si-C and Si-F bonding were also existed because of history effect. The bondgap were calculated as 2.7eV. The dielectric constant of the multiple-layered films was close relative to the thickness of the covering layer-SiOx, so the thickness had better be reduce. The bonding configurations of multiple-layered films had no evident changes after 400癈 annealing, the thickness raise very little and the dielectric constant increase 8%. Compared with one-layered a-C:F films prepared in the same conditions, the SiOx/a-C:F/SiOx multiple-layered films had a better thermal stability.

结果表明，多层膜主要由C-F，C=C，Si-O键构成，由于器壁的历史效应，薄膜中还存在少量Si-C和Si-F键；多层膜的光学带隙经计算约为2.7eV；多层膜的介电常数与包层SiO_x厚度有很大关系，应尽可能减小SiO_x厚度；在经历200-400℃的N_2氛围中退火后，多层膜的红外结构没有发生太大的变化：膜厚度稍微增大，介电常数只增加了8％，与同样制备条件下沉积的单层a-C：F薄膜相比具有较好的热稳定性。

None; unless it avail him somewhat, that he was broken down by long and exquisite suffering; that his mind was darkened and confused by the very remorse which harrowed it; that, between fleeing as an avowed criminal, and remaining as a hypocrite, conscience might find it hard to strike the balance; that it was human to avoid the peril of death and infamy, and the inscrutable machinations of an enemy; that, finally, to this poor pilgrim, on his dreary and desert path, faint, sick, miserable, there appeared a glimpse of human affection and sympathy, a new life, and a true one, in exchange for the heavy doom which he was now expiating.

光，其中有崭新和真实的生活，可以取代他目前正在赎罪的沈重的命运。如果把那严酷而伤感的真理说出来，那就是：罪孽一旦在人的灵魂中造成一个蹿隙，今世便万难弥合。当然，你尽可以用心守望，以防敌人再度闯进禁地，甚至还可以预防他在随后的袭击中选择另一条比他原来成功的突破曰更好的途径。但是，那断壁颓垣仍然存在，敌人就在附近暗中移动，试图再次获得难忘的胜利。如果这算是一场激争，那是无须描述的。

First, the stations'timing process and the slot aligning are discussed. Second, the dissertation propose a resource request random access method based on feedback. The performances of this method are analyzed. Third, proceed from the considerations of the MAC protocol for the HFC system, a QOS-oriental scheduling algorithm for the MAC protocol based on dynamic TDMA is proposed. Simulation results show that the performance of this algorithm is better than that of the first come first service. Forth, two contention resolution algorithms ----p-persistent CRA and tree CRA, which are usually adopted in the HFC system, are summarized. The delay and characteristic are compared. At last, the dissertation introduces the function implementation of the MAC layer based on COM21 UPSTREAMS.

首先，讨论了基站的同步进程和时隙同步的实现；然后，本文提出了一种带反馈模块的资源申请信号随机接入方法，并对其进行性能分析；然后，从HFC系统的MAC协议出发，提出了一种用于基于动态TDMA技术的MAC协议的业务安排算法，计算机仿真结果表明其性能优于先到先服务法的性能；然后概述了常用于HFC系统的两种冲突解决算法——p-坚持冲突解决算法和树型冲突解决算法，比较两者的时延性能与特征；最后，介绍了基于COM21 UPSTREAMS协议的MAC层功能实现，给出了硬件框图和照片。

If ink is located at stay, you can be sure of is due to three business card printing and membership card making drum or delivery roller of a large gear backlash caused by a hard object, which several large gear speed shall be business card printing and membership card production speed, but which gear causing available stated before gear rotation to determine, such as the location of the ink is moving about, mainly by the rollers or drive pinion gear.

如不朱杠的场所是变不静不不静的，则可以必不退是由于不一个制卡和会员卡制息滚筒或播纸滚筒上的不小齿轮的齿隙有软物引起的，因这几个不小齿轮的转速即为制卡和会员卡制息速率，但由哪个齿轮引起可用背后所讲的齿轮不静弹法来猜测，如不朱杠的场所是走不静的，则宾给是由不朱辊齿轮或传不静小齿轮所引起。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。