查询词典 problems

From the practice of teaching, this paper explores the problems on poem teaching. Such as: Saying any thing all from books,grasping poem impractically and doctrinally,lacking the direction of methods on enjoying a poem,no training about writing,the fourth problem is only put forward. This paper analyses the causes and gives the tactics on the problems of the first three.

本文从教学实际出发，探讨了诗歌鉴赏教学中"吊书袋"的问题、整体把握的空洞与教条的问题、欣赏方法的指导的欠缺问题、诗歌写作尝试的空缺问题，对前三个问题分析了其产生的原因以及应对策略，对第四个问题只是提出而已。

The introduction of line searches requires the solution of sub-problems must be a dropped direction, that is g T k δ k 0, In this paper, we study the existed methods of solving sub-problems, prove Zhang and Xun 1999's dogleg method and Steihaug 1983's conjugate gradient method to meet the condition of adequate decrease, then the solution can be used in line search.

引入线搜索要求子问题的解必须是下降方向，即g T k δ k 0，本文研究了现存的子问题的求解方法，证明了Zhang和Xun1999折线法、Steihaug1983共轭梯度法满足"充分下降条件"，得到的解可以安全实施线搜索。

However, in some situations, models are hard to satisfy these assumptions at the same time. We meet a number of random errors with serial correlation and heteroscedasticity in practical problems. The rationality of these assumptions for random errors is doubtable. Therefore, it is necessary to test for correlation and heteroscedasticity in regression, which is an important step of dealing with regression problems and plays an important role in theory and practice.

但实际问题中，回归模型很难同时满足Gauss-Markov的三个假设，人们在实际问题中发现许多随机误差出现序列相关和方差不同的现象，因此对回归模型的随机误差的独立性和方差齐性的假设产生了质疑，从而展开了回归模型的相关性和异方差检验的研究，它是处理回归问题的重要步骤，在理论和应用上都有十分重要的意义。

In system of sth resembling a net of converse content drift net, the design arrangement that reclaims to central optional location locates and carry method is two serious research problems, before research is this two problems consider alone, cause a system to join to be perfected not quite.

在逆向物流网络系统中，回收中心的选址定位和运输路径的设计安排是两个重要的研究问题，以往的研究都是将这两个问题单独考虑，致使系统衔接不够完善。

This book also studies the problems of fault processing in geological mapping, and cross section making, as well as related problems of variogram estimation, and dual form of Kriging estimation.

本书还讨论了地质绘图过程中断层处理的问题，和剖面图绘制问题，以及变异函数估算中有关问题，和克里金估计方法的对偶形问题。

By the theory of complex functions, dynamic propagahon problem on Dugdale model of mode Ⅲ interface crack for nonlinear characters of materials was studied. The general expressions of analytical solutions are obtained by the methods of serf-similar functions. The problems dealt with can be easily transformed into Riemann-Hilbert problems and their closed solutions are attained rather simple by this approach.

通过复变函数论的方法，对材料的非线性特性下的Ⅲ型界面裂纹Dugdale模型的动态扩展问题进行了研究，采用自相似函数的方法可以获得解析解的一般表达式，应用该法还可以很容易将所讨论的问题转化为Riemann-Hilbert问题，并可以相当简单地得到问题的闭合解，利用这些解并采用叠加原理，就可以求得任意复杂问题的解。

The main problems that the patient suffered from are: 1. The dejecta is leaked to vagina for unknown reason; 2. The break happened in the suture the fifth day after the 3rd duodenostomy surgery, and therefore, the dejecta is out from here instead of the ostomy tube made in the 2nd surgery; 3. A 15-centimeter-long wound by the surgery does not heal for a long time. All these problems could not be solved for a long time. For these reasons, the patient has already suffered from these and stayed in bed for nearly 3 months.

病人现在的主要问题是：一是阴道内出大便，二是第三次手术小肠缝合处在第五天接口崩开，现所有大便从小肠漏口排出，而原直肠造漏口不再有大便排出，三是腹部长约15公分手术刀口一直开敞而不愈合，国内的医生对病人的病情没有解决办法，致使病人已经卧床将近3个月不能下床，每天遭受着病痛的折磨，过着地狱般的生活。

For the problems to minimize the sum of earliness penalties and resource constrained problems, the optimal algorithms are given.

对目标函数为极小化提前惩罚和问题和资源约束问题给出了最优算法。

This paper introduces the application of irregular triangulation network method in the calculation of earthwork engineering,and the problems which should be paid more attention in the process,and put forward the methods to solve the problems.

介绍了不规则三角网法在土方量现实工程中的应用，利用此法在现实工程中应注意的问题，提出了解决问题的办法。

The purpose of this paper is to investigate the representation problems of strong efficient solutions by generalized saddle point in nearly cone-subconvexlike set-valued vector optimization problems.

1引言近几年，集值映射的广义凸性倍受一些学者的关注，这主要是由于在集值向量优化理论的证明中它能代替凸性要求。

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样