模型

High yield ; Crop ; Normalized leaf area index ; Simulation model

高产；作物；相对叶面积指数；模型

Then by use of Price-Mueller (2000) model, the thesis will work out the causes of CF company' s brain drain through the full analysis on environmental variables, individual variables and structure variables that cause CF company' s brain drain as well as the analysis on the investigation of CF company and the company' s own data.

其次，通过对CF公司人才流失情况的调查和公司已有相关资料的分析，运用Price-Mueller(2000)模型，对导致人才流失的环境变量、个体变量、结构变量等要素进行了详尽的考察分析，得出CF公司流失的原因。

He altered it and, in so doing, created first egg-shaped "orbits" and, finally, an ellipse with the sun placed at one focus.

在多次用他的模型预测火星位置失败之后，他换了一种模型，他先是新建了一种蛋型的&轨道&模型，最后才是椭圆型的模型，太阳位于椭圆的其中一个焦点上。

5 ML 0.5% amitriptyl ine, 0.5% bupivacaine or normal sal ine were given in group A, group B, and group C, respectively through implanted cannulas after 5, 7 and 9 days of CCI once a day for successive 3 days.

健康成年雄性SD 大鼠24 只，体重（200 ± 20）g，按照Bennett 等的方法制备CCI 模型，5 d 后随机分为3 组（n=8）：阿米替林组、布比卡因组、生理盐水组。

By employing the Jordan-Wigner transformation and a modified mean field method, we are able to determine its ground-state quantum phase diagram approximately. The chapter IV is the main part of this Thesis. It contains the main innovations in our work. We propose and study in detail a S=1 Ising chain with the interplay of single-ion anisotropy and dimerization. The main results and innovations are the following: We show that the total number of the zero-component of spins at each site is a conserved quantity. This quantity, which may intuitively called as hole's quantum number, is hidden in the system. We show further that the hole's number in the ground-state is zero; By using the Jordan-Wigner transformation, we map this model onto a series of subsystems described by the spin 1/2 dimerized transverse Ising model. We solve the subsystems exactly, by presenting the exact wave functions and spectra;We show that this system exhibits a series of quantum phase transitions by varying the dimerization strength. We determine the quantum critical points exactly. We also show that the criticality is the same as that of the uniform S = 1/2 transverse Ising chain.

第四章是本文的重点及主要创新内容，我们具体研究了自旋为1的在横向单离子晶格场中的一维二聚化Ising链，我们得到的主要结果和创新之处是：(1)证明了这一模型具有一种隐藏的对称性，即自旋第三分量为零的格点数目是一个守恒量，并证明基态出现在空穴数目为零的子空间中；(2)利用Jordan-Wigner 变换将此模型变换到一系列自旋为1/2的横磁场中的二聚化Ising 模型，并给出了相应严格的波函数及能谱；(3)我们发现系统的基态随着二聚化强度的变化将呈现出一系列量子相变，我们得到了量子临界点的精确位置，并证明其临界性质与自旋为1/2的横磁场中的均匀Ising 链中的临界行为属于同一普适类。

It is understood that this tea Fair Dealer domestic provinces and autonomous regions throughout the city, for a total of 9,000 people, the scene in the show, tea merchants to display their tea, tea beverages, tea, health products, tea, food and other goods tea deep processing of tea, tea books, tea, tea products, tea production, processing and packaging machinery, the form of physical display, images, text, models, video, on-site operation.

据了解，本次茶博会参展经销商遍及国内各省区市，总计9000多人，在展会现场，茶商们展示了茶叶、茶饮料、茶保健品、茶食品及其他茶叶深加工茶品、茶书、茶具、茶馆用品、茶叶生产、加工及包装机械，展出形式为实物、图片、文字说明、模型、录像、现场操作等。

The feed motion is projected into each feed axis, and based on its mechanical model(motor driving torque/force, Inertial force and cutting force), the constraint relationship between feedrate, feed acceleration, and feed drive capabilities and toolpath geometric characteristics is derived. With this constraint model, the acceleration and deceleration of each axis can be limited within its capability.

将进给运动分解到各运动轴，根据机床进给轴的力学(电机驱动力／力矩、进给系统所受的惯性力及切削力)模型，推导了多轴联动加工时进给速度、加速度与各进给轴驱动能力以及加工路径几何特性之间的约束关系，使得加工过程中机床各运动轴的加减速始终处于其加工能力范围内。

In Chapter Two, we introduce the Dirac Fermion as the low energy excitations of the graphene, based on the field theory. We then discuss two-dimensional honeycomb lattice in the nearest-neighbor tight-binding model.

在第二章里，我们研究最近邻紧束缚模型下的二维蜂窝结构的电子态，然后讨论对应的场论模型，即一维Dirac Fermions 模型，最后引出有效质量方程。

The gray system theory is introducted for the study of failure of protective coating of bridge, and a gray model GM （1, 1） of coatings corrosion area variantion with time is built, a generic predict formula of protective coating life of bridge is put forward based on this theory.

将灰色理论引入到桥梁防腐蚀涂层的失效研究中，建立了涂层腐蚀坑剥落的面积随时间变化的GM（1，1）模型，并在此基础上推导出桥梁防腐蚀涂层寿命的一般预测公式。

It presents 100 ideas on sustainable urban development and liveable construction.

它展示了城市可持续发展和适宜居住的建筑的100个想法，有投影、模型、视频、声音装置和照片。

Looking to bounce back from defeat against Cesena last weekend, the Calabrian boss will be sticking to his tried and tested 4-3-3, with Lopez and Sedivic joined up front in Giampaolo's absence by either Nanni or Plasmati.

鉴于上周末对切塞纳的比赛中反败为胜，这支南方球队将会更坚持其一贯而有效的4-3-3阵型，洛佩斯和塞德维奇将取代受伤缺席的詹保罗，和纳尼或者帕斯马蒂中的一个搭档锋线。

Meanwhile, their exposure to the more freewheeling ways of the West broadened dramatically.

另外，西方较自由的生活方式对年轻人的影响增大。