逆关系

This thesis explores the feasibility of using synthetic jet actuators for the propulsion of small underwater vehicles. This work was inspired by the widespread use of pusatile jet propulsion by sea creatures such as squid, salp, and jellyfish. The jets created by these animals utilize vortex rings for thrust production.

由於养殖渔业具有短期供给缺乏弹性、易腐败、不易储存等特性，更因为养殖业的交易性质，大多是在货到当天立即透过价格的调整，将到货量全部结清，所以数量与价格的关系，应该是数量影响价格，故本研究透过逆需求系统求算所有参数。

Further more, except the detachment-type fold in depression formation, the inversion structural styles can be subdivided into five types: reviving type, forward-expanding type, backward-expanding type, tyrannizing type and truncated type according to the mode of association of the thrust faults and the early normal faults.

进而将反转构造样式除坳陷层滑脱褶皱外，依据反转过程中形成的逆断层与早期伸展断层的组合关系归纳为五种类型：复活型、前展型、后展型、欺压型、截断型。

According to geological exploration, productive exploration, research achievements and practical production experiences in the mine, varieties geneses of interlayer - gliding structures and relationship between nappe tectonic and folded structure systems are analyzed.

文章根据矿床地质勘探、生产勘探、地质科研成果和矿山生产实际，分析了矿区层间滑动构造的各种成因类型、它们与矿区逆冲推覆构造体系、褶皱构造体系之间的关系；总结了层间滑动构造的控矿作用。

The following is the solution of kinematics and inverse kinematics of robot, including setting the kinematic equation by unchaining the closed chains.

在此基础上，建立机器人的运动学和逆运动学方程，其中运动学部分将该机器人的混合链结构化解成为等效的开链结构，建立开链的运动学关系。

Results show that many geological phenomena,surface ruptures,change of fault dip angle,vertical displacement of two plates alone fault and distribution of huge geo-hazards,are highly related with D-InSAR image.

基于差分干涉雷达观测及相关资料，对龙门山断裂在本次地震中活动性进行了初步分析，结果表明干涉雷达形变图像与地表破裂范围、逆冲角度的变化、上下盘升降关系及大型余震的展布存在很强的相关性。

The main work of this paper: Firstly, Basing on the summarization and analysis of the walking mechanism, Parallel drive five-bar mechanism is applied for walking mechanism. And then the characteristic of the trail and positive kinematics as well as reverse kinematics are discussed. Secondly, the model of walking mechanism is established according to Parallel drive five-bar mechanism, and then a figure planning is designed for the foot-end trail. The characteristics of the parallel drive are emphasized to research in this paragraph by the method of insert value. At last, the simulation is performed in the ADAMS to compare the real result to the theoretical value. Thirdly, a sealed structure of a Quadruped Walking Robot is designed and established. The whole control system, including motor, sensor and control circuit, is sealed in the robot. Walking is derived in the way of the shaft driving and the dynamic torque sensor is used to the surrounding conditions of the robot's foot-end to be the foundation of the robot's control. At last, the applying principle of the dynamic torque sensor is researched in detail basing on the traditional sensor of the walking robot. Moreover, the principle is divided into several sorts to discuss. Finally, simulation and verification of the monitor principle are come through in the Mechanism of the Pro/Engineer.

论文的主要工作有：在对传统步行机构总结分析的基础上，提出将平面并联五杆机构应用于四足步行机器人的腿部结构，并对其轨迹特性、正运动学、逆运动学特性做了详细计算分析；依据平面并联五杆机构的模型，建立机器人步行机构的实体模型，对其足端的轨迹做了图谱规划，并利用插值法对并联驱动端的特性曲线作了研究，并在ADAMS中进行仿真，将结果与理论值相比较；然后设计了一套四足步行机器人密封装配结构设计方案，建立四足步行机器人单足结构、驱动以及传感器监测的三维实体模型，将机器人的整个控制系统，密封装配在步行机器人的机体中，通过轴传动来驱动步行机构实现步行，采用动态扭矩传感器监测步行机构的驱动关节受到的扭矩变化，从而获得四足步行机器人足端的周围情况，为步行机器人的控制方案奠定了基础；论文的最后在分析步行机器人传统控制传感器的基础上，详细分析了动态扭矩传感器的监测原理，并分几种情况分别分析了其监测原理，并在Pro/E的Mechanism模块中实现了监测原理的仿真与验证，最后给出了传感器监测信息与系统判断之间的关系。

Two complete congruences on the congruence lattices of regular semigroups with Q-inverse transversal s are analysed.

研究了具有Q-逆断面的正则半群上的同余格Con上的等价关系W和Q，它们都是Con上的完全同余，这些完全同余的每一个类是区间，给出了每一个类的极大、极小同余的表示。

The algorithm in this paper possesses at least one of the advantages such as fewer operating, less memory capacity, higher precision or programming simplified, in compar with the current methods.

本文讨论三对角线性方程组的解耦算法，矩阵的LR-'分解，求行列式，Jacobi矩阵的特征值与特征向量的关系以及三对角阵求逆等方

From this conclusion, the correlation and power spectrum of random SSM doesn′t possess the complex fractal structure.

给出了无穷尺度的确定性自相似关系的唯一解，这个解不具有复杂性，从而可导出结论：具有逆幂律特性的平稳随机分形的自相关和功率谱不可能具有通常所理解的复杂分形结构。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。