实际地

A husbandman who had a quarrelsome family ,after having tried in vain to reconcile them by words ,thought he might more readily prevail by an example .so he called his sons and bid them lay a bundle of sticks before him .then ,having tied them into a fagot, he told the lads ,one after the other ,to take it up and break it .they all tied ,but tried in vain .then untying the fagot ,he gave them the sticks to break one by one .this they did with the greatest ease .then said the father:"thus you ,my sons ,as long as you remain united ,are a match for all you enemies ;but differ and separate ,and you are undone."

一个农夫，家庭不和睦，用言语劝告大家和好，总是无效，最后他想，用实际例子可能容易说服他们。于是他把儿子都叫来，吩咐他们抱一捆火柴放在他的面前。他把火柴捆成一捆，接着叫这些孩子挨次拿起来折断它，一个个都试过了，但都没有折断，接着他解了捆，一根一根地给他们折，他们都轻而易举地折断了。这时父亲说："孩子们，只要我们团结一致，你们就能对付一切敌人；但是如果意见不合，各自东西，那么你们一定要失败。"

Using computer aided geometrical drawing function,this method is introduced to draw force polygon conveniently and accurately under AutoCAD environment,which meets with the higher request in the engineering nowadays.

以手工作图为主的图解法是一种求解力系问题的常用方法，介绍此方法在Auto-CAD环境之下，借助其强大的几何设计绘图功能，方便、精确地做出力的多边形，从而更好地满足工程实际要求。

In the application of water-saving drilling system,in-hole drilling condition can only be judged by observing pressure change in pressure gauge on the surface with low precision.By study,the quantization of working condi...

通过研究，最终解决通过地表压力变化值来判断孔内工作情况的量化问题，建立初步理论模型，从而更加准确地判断孔内的工况，使这套钻具更快地应用到实际工程中。

In order to reasonably depict four basic problems with friction, one Coulomb friction new form in first Kirchhoff stress is proposed to deal with finite deformation problems, other Coulomb friction form in incremental mode to elastoplastic flow theory; Hilbert function spaces concerning elastoplastical problems with friction are established, so it makes all operations and calculations in the treatise standardized within the scope of reasonably topologic structure; In view of functional extremum, the equivalence between generalized variational inequalities principles in elastoplasticity with friction and corresponding basic problems are testified by inducing Lagrangian multipliers, so it provides a rationally theoretical basis for numerical methods in elastoplasticity with friction; From the viewpoint of variational inequality, the theory of generalized variational inequalities in elasticity and elastoplasticity with frictional constraint is studied, and the uniqueness and existence of the solution of FEM is proofed under the proposed conditions of stress compatibility, and them FEM approximation and a discrete solution are discussed; Based on the principles of generalized variational inequalities in elastoplasticity with friction, direct generalized variational inequalities methods is pretended, which is a natural generalization and development of direct variational methods; Using generalized variational inequalities methods, some examples in metal forming including plane deformation, upset and extrusion are analyzed and the results prove that all the theories and methods in the paper are right, feasible, accurate and advanced.

主要内容有：为了合理地描述金属塑性成形中摩擦约束弹性、弹塑性基本问题，提出和研究了有限变形下以Kirchhoff第一应力表示的Coulomb摩擦定律形式和弹塑性流动理论下以增量形式表示的Coulomb摩擦定律表示形式；系统建立了摩擦约束弹塑性问题的Hilbert函数空间，使本文规范在一个具有合理的代数拓扑结构内进行一切操作和运算；利用Lagrange乘子，从泛函极值的角度系统地阐述和论证了一系列摩擦约束弹性、弹塑性广义变分不等原理与相应的实际问题之间的等价性，它为处理摩擦约束的弹塑性力学数值方法提供了合理的理论基础；从变分不等式的角度出发，阐述了对应于摩擦约束弹性、弹塑性问题的广义变分不等式理论，首次提出了在应力相容性条件下，它的有限元解具有存在唯一性，进而讨论了其有限元近似及离散解法；基于摩擦约束弹塑性广义变分不等式原理，首次提出了直接广义变分不等式方法，这一方法是直接变分法的合理推广和发展；利用直接广义变分不等式方法对金属压力加工中的平面变形问题、镦粗、挤压等塑性成形问题进行了分析计算，验证了该理论和数值算法的正确性、实用性、精确性和优越性。

So, it is meaningful in practice and theory to probe into the application of Monte Carlo method in hydrodynamics.

本文首次较系统地讨论了蒙特卡罗方法在水动力学中的应用，积累了一些解决实际问题的成功经验，为以后进一步深入细致地研究打下了基础。

Above all, in nowadays background, simply combine the classic learning method to pattern recognition for constructing a classifier is impolitic, because the ultimately purpose of recognition is to have a higher performance with higher predictive accuracy.

综上所述，在目前的研究背景下简单地用经典的归纳学习算法进行学习来构成模式识别用的分类器是不审慎的，因为构成具有高判决精度的分类器是模式识别的最终目的；而如果不加考虑地任意采用一种现成的决策森林算法或多变决策树算法来解决实际问题也不一定就能取得更理想的效果。

The initial purpose to set up schools is to solve the issue of inaccessibility to compulsory education among these children; the actual result turns out to be positive.

但是，这个中国社会转型期出现的特殊事物，虽然大量地、长时期地实际存在，却迟迟得不到社会和政府有关部门的认可，其原因复杂多样。

We ought to affirm the inevitability to intellectual economy evolution and development and actuality, the main feature that holds intellectual economy run-of-milly in the analysis to real problem reachs its and the inelasticity that have economics, and lay the actual condition of specific country according to specific and spatio-temporal condition, those who explore intellectual economy is run-of-mill the expression in specific country and evolution, be in thereby general with the economics that intellectual economy period studies relatively in special, abstraction and concrete union.

我们应当确认向知识经济演化和发展的必然性和现实性，在对现实问题的分析中一般性地把握知识经济的基本特征及其与现有经济学的不适应性，并且根据特定时空条件下特定国家的实际情况，探索知识经济的一般性在特定国家的表现和演化，从而在一般与特殊、抽象与具体的结合中相对地研究知识经济时代的经济学。

By using K-ε twoequation model to modify turbulent flow, the simulation results could coincide better with the real filling processes. Combined flow path analytical program which was used to revise the ingate velocity, it increased the accuracy effectively, and raised the calculating velocity.

该软件首次采用非均匀网格剖分技术，更为逼真地反映了铸件的几何形状；耦合计算过程中，采用简化耦合算法，避免了繁复的迭代过程，缩短了迭代时间，且计算精度能满足工程要求；采用K-ε双方程紊流模型对紊流流动进行修正，模拟结果更加符合实际充型过程；联合流路解析程序修正内浇口入流速度，有效地提高了计算精度，加快了计算速度。

Simultaneously with the emergence of the continental drift hypothesis, Li Siguang actively approached and dealt with the problem of continental crust horizontal movement and, in combination with the reality of China's mainland, developed the theory of intracontinental collision deformation, i.e., the geomechanic theory and method that included the global continental tectonic system.

中文摘要：本文简要地介绍了魏格纳大陆漂移说的主要内容及其提出的依据；论述了在大陆漂移说的基础上，由于海洋地质地球物理调查发现了大洋中脊、洋底扩张，解释了大陆张裂的机制，并建立了全球板块构造理论，形成现代地学思想的革命；李四光在大陆漂移说提出的同时已在积极地探讨和论述大陆地壳水平运动问题，并结合中国大陆实际，发展了陆内碰撞变形理论，即包括全球大陆构造体系在内的地质力学理论和方法。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。