查询词典 direct

Firstly, several kinds of schemes were proposed according to the design demand. The best scheme was chosen after analyzing and comparing the schemes. The robot's structure was designed with Pro/Engineer and AutoCAD software. Secondly, the kinematics analysis conducted, coordinate transformation matrix using D-H method was set up, and the kinematics equation direct solution and inverse solution was deduced. The manipulative interface about the kinematics equation direct solution and inverse solution was completed with VC++ and the velocity Jacobian of displacement matrix was constructed using differential transform method. In the process of the trajectory planning based on robot's kinematics analysis, I propone a method by which we can get middle nodal point with normalizing factor in order to simplify our searching for these middle nodal points. In addition, I give these middle nodal points with actual physics signification. For eliminating contradiction between real-time and accuracy, I bring forward separately limit of error and reversal interpolation method. For decreasing calculation quantity, we resort to tri-spline interpolation in the articulation space.We analyse the work range of the robot by resorting to graphic means.

首先，作者针对机器人的设计要求提出了多个方案，对其进行分析比较后，选择其中最优的方案后用Pro/Engineer和AutoCAD软件进行了机器人模型结构设计；其次，进行了运动学分析，用D-H方法建立了坐标变换矩阵，推算了运动方程的正、逆解，运用VC++制作了正、逆运动学求解的求解界面；并且用微分变换法推导了速度雅可比矩阵；在基于机器人的运动学的轨迹规划中，通过在操作空间的规划，提出了归一化因子来求解中间结点，通过它可以使求解中间结点变得更简单，并且赋予这些中间结点实际的物理含义，对于规划中精确性和实时性的矛盾，提出了以误差极限法和反向插值法来解决的方法；为了减少规划过程中计算量，在关节空间进行三次样条插值；然后借助图解法进行工作空间分析，作出了实际工作空间的轴剖图。

The direct effect of EGCG on LPS in vitro:We investigated the direct effect of EGCG on LPS through the transmission electron microscopy and limulus test for the first time. The results showed that EGCG had no significant effect on the structure and quantity of LPS.

体外EGCG对LPS的直接作用：本研究首次应用透射电镜观察及内毒素鲎实验检测法研究EGCG对LPS的直接作用，结果表明EGCG对INS的结构和量无显著影响，提示EGCG对LPS无直接作用。

A few developed countries of world change engineering technology to mature about the direct fluid of coal, the direct and liquefacient industrialization that realizes coal for our country offerred the possibility on the technology.

世界一些发达国家有关煤炭的直接液化工艺技术成熟，为我国实现煤的直接液化产业化提供了技术上的可能性。

Those problems include inverse position analysis of the machine, inverse and direct position analysis of the parallel locking mechanism, relationships of velocity and acceleration between cutter and actuators, Jacobian matrix of the machine, forward position computation of the machine, the links'velocity and acceleration of the driving chains, the links'velocity and acceleration of the locking mechanism, kinematics simulation of the machine, and so on. The Jacobian method presented in the thesis to calculate the direct position of the machine is of high efficient.

其中包括机床的位置逆解分析，平行机构的位置逆解分析，机床刀具与各主动关节之间的速度和加速度映射关系的求解，并联机床雅可比矩阵的计算，并联机床的位置正解计算，支链构件的速度和加速度计算，平行机构各构件的速度和加速度计算以及机床各运动学指标的仿真计算等。

Polytetra-fluoro-ethylene thin membrane,pass through cut tie by poly-4 fluorous second fluidized resinde,after sinter cut but succeed,direct membrane transfusives membrane transfusive membrane mangler direct but succeed again,It has undeniable electrical equipment insulate behaviopural,non-ageing and extensive use temperature lint.

聚四氟乙烯薄膜，车削带由聚四氟乙烯悬浮树脂经模压，烧结后车削而成。定向膜将车削膜再经压延机定向而成，它具有优良的电器绝缘性能，不老化及广阔的使用温度范围。

Its algorithm mainly has the transmission to shut, the dynamic direct cluster law and the maximal tree law and so on, in which tendency direct cluster law computation load are least.

其算法主要有传递闭包法、动态直接聚类法和最大树法等，其中动态直接聚类法计算量最少。

Technical Analysis for Direct Access Trading is part of a six-book series on direct access trading from McGraw-Hill.

技术分析直接获取交易的一个组成部分， 6 -丛书就直接进入交易从麦格劳-希尔。

Calculations indicate that Ni-Ni interaction in Ni81B19 alloy is stronger than metallic bond in pure Ni. However, the Ni-Ni interaction in pure Ni is stronger than that in Ni80P20 alloy. Direct B-B contact in Ni81B19 alloys appears in our simulation, however no direct P-P contact in Ni80P20 alloys is found.

其次，在Ni的d电子和B的p电子之间存在着强烈的相互作用，形成Ni原子和B原子间的强共价作用。B和P的加入后使催化反应中的活性位Ni的活性d电子数增加，在合金中起修饰作用。

This dissertation theoretically demonstrates the feasibility to achieve constant direct current-stimulation-circuitry under microampere , bring forward design scheme software and hardware system using in cellular electrical stimulation. In order to further quantitatively research on direct current-stimulation and ascertain the best intensity and density and stimulative current , the quantitative and qualitative analyse for gained diagnostic data are also been discussed in this paper.

本文正是从该理论基础出发，论证了实现微安级直流电刺激的离体组织细胞生长培养实验系统的可行性，提出了用于刺激实验的软硬件系统的开发放案，并对采集数据的定量和定性的分析作了初步的探讨，希望通过实验能够初步确定适合该组织细胞生长培养的最佳刺激电流和最佳刺激时间。

At first step, the processor before the deformable body contact the end face of cone die cavity regarded as an extrusion process. The minification of core boss's cross-section regarded as compressibility of direct extrusion, which acted as definition factor when construct the Direct Extrusion Model element. Another step, the model element of flat punch extrusion on wedge piece process was constructed when propose the process of deformable body overflow die corner. In this way the spherical end face of blank looked as cone end face one, t he approximate treatment is one of originality innovation in this paper. At last, the two elements have been connected and constructed the model element of cone boss part's deformation in the open die forging.

对于锥形凸台成形的第一个特征时段，即坯料和锥形凸台型腔的端面接触之前的变形过程，本文将凸台的截面缩小率转换成挤压成形的压缩率并以此为界定，建立了不同截面缩小率时的锥形模正挤压的模型单元；对于锥形凸台成形的第二特征时段即锥形模的角部充满过程，在详细考察锥形型腔端面对变形过程影响的基础上，将变形体的球形端面近似成锥面建立了平冲头挤压楔形体的模型单元；最后将前述两种模型单元有机连结，构建了开式模锻中整个锥形凸台成形过程的定量描述。

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。