不平衡

Based on this model, using LQR and the Dragon Bergh extreme disposition method carried on the control to the two-wheeled self-balancing mobile robot in the posture and the speed, and obtained the stable dynamical balance process.

针对高阶次、不稳定、多变量、非线性、强耦合的两轮自平衡移动机器人系统，采用Lagrange方程推导出动力学模型，对其进行稳定性和可控性判断，并利用LQR和龙伯格极点配置的方法在此模型的基础上对两轮自平衡机器人的姿态和速度进行控制，可获得较为稳定的动态平衡过程。

This method overcome the problems of many supposition conditions in theory and difficulty in searching critical slip surface in 3D limiting equilibrium analysis; It uses the 3D FEM\'s stress field directly, differs from the practical value of 3D FEM strength reduction method used hypothesized load, and differs from the characteristic of the FEM with limiting equilibrium theory still to need to divide the columniation, and suppose the critical slip surface in advance.

该方法克服了三维极限平衡分析方法在理论上引入较多假设条件，且搜索临界滑裂面困难的问题；它直接采用三维有限元应力场，不同于三维有限元强度折减法基于虚拟荷载上得出的实用价值；同时异于沿用极限平衡理论的有限元法仍需要进行条柱划分，并事先假设滑裂面形状及位置的缺点。

The study shows that in the radial direction the dynamic forces acting on the particle balance on the particle itself; there is not a so-called trajectory of the particle in which the composition of forces acting on the particles is zero, but there is a trajectory of the particle in which the radial slip velocity of particle is zero, the tra...

通过对固体颗粒的运动和受力分析发现固体颗粒在沉降过程中径向合力几乎处处为零，不存在所谓的径向合力为零的一个平衡轨迹面，但存在着一个径向沉降速度为零的轨迹面，这一轨迹面就是平衡轨迹面法所要寻找的；首次推导出了该轨迹面半径与固体颗粒直径、水力旋流器自身几何参数以及操作参数之间的定量表达式。

Have no reference to have trouble with hold the position of keep an eye on keep / control one's temper keep one's balance keep one's appointment keep company with keep sb. company keep competition between keep faith keep one's mind on keep/bear in mind keep one's head keep pace with keep a promise keep in touch with sb. keep track of keep one's word keep to the point lay a claim to lay / put / place emphasis on / upon lead the way learn by heart leave sth. out of consideration lose control of lose one's balance lose one's head lose heart lose contact with lose sight of lose one's temper lose faith in lose track of make an appeal to sb. make an appointment with sb. make an attempt to do sth. make the acquaintance of sb. comments on/upon sth.

渴望 求助于某人与------无关与-----闹纠纷担任---的职务照看，留意忍住不发脾气保持平衡守约与-----结交，与-----亲热陪伴某人在------之间进行竞争忠于信仰专注于记住保持镇定与-----并驾齐驱遵守诺言与某人保持联络记录，保持与---联系守信用紧扣主题主张，要求，自以为是着重于，强调领路，带路记住，背过不考虑某事失去对------的控制失去平衡慌乱，惊慌失措失去信心与-----失去联系看不见发脾气失去对-----的信任失去----的线索向某人呼吁某事于某人约会企图做某事结识某人评论把----进行比较控告向某人道歉知识改变命运，思路决定人生！

In this paper well verify that it is true for tree(a special type of bipartite graph)vertex-multiplications, and it is a extention to one of the results in paper.In the second chapter, from the point of view of non-decreasing degree sequence we give a degree-maximal non-Hamilton simple balanced bipartite graph bm,n. We give a result below.

第二章中从图的不减度序列角度给出了一类度极大的非哈密尔顿简单平衡二部图，并且证明了：任何非哈密尔顿的简单平衡二部图，它的不减度序列一定弱于此类图中的某个图b_的度序列。

Natality, mortality and population The mature of competition I1

当单位个体出生率正好平衡单位个体死亡率，种群密度既不增加也不减少时，此时的种群密度为平衡种群密度。

So some products need to be converted test platform to balance the tester capacity and improve the tester utilization.

这就造成了待测IC和测试系统不能平衡，某些测试系统产能不够，而另外一些测试系统不能充分利用，所以我们要转换产品的测试系统来达到平衡测试机产能，从而提高测试机利用率。

But the rigid body limit equilibrium method can not reflect the process of progressive instability and mechanical mechanism on failure for rock mass while the nonlinear finite element method is difficult to solve the displacement discontinuity of weak structural plane.

重力坝的深层抗滑稳定分析多采用刚体极限平衡分析方法和非线性有限元法，但通常的刚体极限平衡法不能反映坝基岩体渐近失稳过程和破坏的力学机制，非线性有限元法则难以解决坝基中软弱结构面位移不连续问题。

Positive protons, neutrons and negatrons strike a balance in forming a neutral atom.

在原子内部，带正电的质子、不带电的中子和带负电的电子，三者平衡形成一个不带电的平衡体——原子。

Secondly, there are many existing laws with the WTO rules or provisions inconsistent with the contents of inadequate places, the number of large, involving many departments, such as : involving quantitative import restrictions, trade balancing requirements, foreign exchange balancing requirements, local content requirements, priority products for the purchase of legal provisions should be amended; Tariff Law, Trademark Law, Copyright Law, and foreign investment legislation, in the light of WTO rules should be revised in light of China's commitment.

其次，现行法律之中有许多与世贸规则的内容不符合或者规定不充分的地方，这一部分数量大、涉及许多部门，如：涉及到进口数量限制、贸易平衡要求、外汇平衡要求、当地成份要求、优先购买国产品要求的法律条文，都要进行修订；关税法、商标法、著作权法、外商投资立法等，都应参照世贸规则结合我国的承诺加以修订。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐