空间地

We look forward to our glass mosaic greater access to your side, decorate your living space beautiful!

我们期待我们的玻璃马赛克更多地进入您的身边，装点您亮丽的生活空间！

In view of the uncertain load disturbances and parameter variations and so on, the disturbance restraint performance of the six-phase synchronism motor control system for the ship electric propulsion is improved under the robust control theory.

在船舶的空间运动模型和螺旋桨四象限模型的基础上，综合考虑船舶和螺旋桨地相互作用，建立了船桨一体化的运动模型，并结合六相同步电功机控制系统仿真研究船舶电力推进六相同步电动机控制系统典型工况下的运行性能。

An explicit spatial and temporal analysis of the complex dynamics of multiple cropping in the context of coupled human and natural systems is necessary for modeling and evaluating the impacts of human activity on global environmental change and food security.

在空间和时间上清晰地认识农业多熟种植的特征，将会对掌握高强度土地利用的过程和特点，模拟与评估土地利用对粮食安全及生态环境安全的影响有重要的意义。

Based on the fundamental principles of the improved method mentioned above, multi-functional computation software package, which can be used to analyze effectively the interference effects of random flaws in plane problem, boundary problem and space problem, is compiled and a number of problems involved in the interference effects of different kinds of flaws such as random equal length through-cracks, random branched throughcracks, random unequal length through-cracks, random holes to through-cracks, unequal length edge cracks, equal length and distance multiple edge cracks, random notches with different aspect ratio, random notch to edge crack, non-coplanar surface cracks with different aspect ratio, staggered surface cracks, surface crack to embedded crack and embedded cracks near free boundary are analyzed and computed by the package.

依据上述改进法的基本原理，本文编制了能有效地分析平面问题，边界问题及空间问题的任意缺陷群相互干涉效应的多功能计算软件包。据此，本文分析计算了各类缺陷群。诸如，任意等长裂纹群。任意折裂纹群；任意不等长裂纹群，任意孔与裂纹群，不等长边裂纹群。等长等间距多裂纹群，任意形状比缺口群，任意缺口与边裂纹，非共面不同形状比表面裂纹群，交错型表面裂纹群，表面裂纹与埋藏裂纹群及自由边界附近埋藏裂纹群等的相互干涉效应问题。

According to the real time control experiment of the"3-2-1"type 6DOF platform, it proves that the real time motion control based on virtual simulation is a feasible control method. The designer himself needn't do the modeling and solving of the kinematic positive/negative calculation of the complex space structure and it deeply reduces the needs of the control hardware.

通过所进行的"3-2-1"型六自由度平台实时运动控制实验可以证明，所提出的基于虚拟仿真的实时运动控制是一种可行的控制方法，它不仅不需要设计者自己直接进行复杂空间机构的运动学正、反解的建模与求解，而且极大地降低了对系统控制硬件的要求。

Around the topic, the weak points of the traditional platform is analyzed first, such as complex arithmetic, long calculating time, high needs of hardware and so on. A real time control method based on virtual simulation is suggested to separate the complex positive/negative calculation of space kinematic and real time motion control. And a"3-2-1"type 6DOF platform is designed with the reference of the MAST (Multi-Axis Shaking Table) of MTS. The kinematic and dynamic calculation of the platform is finished. According to the calculating result, the control system of the"3-2-1"type 6DOF platform including 6 linear servo electric cylinders is designed and constructed. And the professional software Pro/E is used to do the 3D model and 6DOF motion simulation of the platform. The motion curves of the pistons of the 6 cylinders are exported with the simulation. At last the control software is programmed with Microsoft Visual Basic 6.0 and realizes the functions with the commands of GE series motion controllers. When loading the motion curves exported with the simulation, every cylinder can follow the curve very well and the platform realizes the hoped 6DOF motion.

围绕选题，本论文首先分析了传统的运动平台控制方法所存在的算法复杂、解算耗时长、硬件需求高的缺点，提出了一种基于虚拟仿真的实时控制方法，该方法将复杂的空间运动学正、反解与实时运动控制相分离；之后，参考MTS公司的MAST多轴振动平台，设计了新型的"3-2-1"型六自由度平台，并进行了运动学及动力学计算，根据相关计算结果，设计与搭建了包括驱动6个直线伺服电动缸在内的"3-2-1"型六自由度平台控制系统；接着，使用Pro/E对"3-2-1"型六自由度平台进行了三维建模和六自由度运动学仿真，并由仿真直接获得了6个直线伺服电动缸的活塞杆的相应运动曲线；最后使用Microsoft Visual Basic 6.0编写了控制软件界面，通过调用GE系列运动控制卡的各种命令函数实现了控制系统的相关功能，而当加载仿真得到的各缸运动曲线后，每缸均能很好地跟踪输入曲线，使平台实现了期望的多自由度运动。

Changes of land use would make NPP decrease and NEP increase with a large range of about 77%. These changes do not only caused by the pixels with land use type changes, but also by the spatial interaction.

土地利用的改变使得NPP有所下降，NEP则出现了大幅地增长，增加了77%，这些改变不仅是发生土地利用方式改变的格点造成的，而且是空间上相互影响的综合结果。

Based on existing and extensive results of cognitive psychology and neurophysiology, the inner process and features of creative thinking are discussed fromthe point of view of nonlinear dynamics, in particular, from the point of view of chaos dynamics.

对所提出的"创造性思维中可能性构成空间理论"模型给出了符合淮地动力学原理的论述。在此基础之上提出了一种"创造性思维过程是复杂的混饨动力学系统的演化过程"的新的学术观点。

This MBA gives students the opportunity to spend 6 weeks on a placement with an international company, as well as on-going language training in the major world languages. The University of Newhaven offers a limited number of scholarships to home and international students.

BEC考试除了对考生是否具有扎实的英文基本功进行测试外，还在出题时为考生发挥其创造性思维留有很大空间，这在BEC三个级别的写作和口语考试中体现地尤为明显。

Th is MBA gives students the opportunity to spend 6 weeks on a placement with an international company, as well as on-going language training i n the major world languages. The University of Newhaven offers a limit ed number of scholarships to home and international students.

BEC考试除了对考生是否具有扎实的英文基本功进行测试外，还在出题时为考生发挥其创造性思维留有很大空间，这在BEC三个级别的写作和口语考试中体现地尤为明显。

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。