查询词典 enumeration problem

This result indicates that the problem is harder than and equivalent to the derivability problem in classic logic and in Horn formula respectively, and that there are no polynomial time algorithms in both cases.

为此 ，张东摩和李未 [2 ]推广了文献 [1 ]中的结果，采用全序划分来刻画认知主体对假说中的公式在相信程度上的差异，给出了新的、基于全序划分模型的开放逻辑，其中所定义的重构具有唯一性。

About the problem of hypothesis testing for the problem of estimate interval,first of all,we set statistic and the distributions of the statistic.Fron this ,we derivate the methods of testing.

对于点估计问题，讨论了估计的优良性质；对于区间估计问题，讨论了估计的精度；关于参数的检验问题，首先建立检验用的统计量及其分布，由此导出检验的方法。

The article is opposite our country 2004-2006 year crop of sturgeon of each province city, breed phyletic, seedling to plant on the base that the newest change of the market and field of commodity fish market has descriptive, breed form of water area lack, consumption effectively what in putting forward current sturgeon aquaculture, exist earnestly of guild of disease of control of lack of onefold, crossbreeding, fish and piscine medicine, sturgeon needs to build wait for a problem, offerred the way to deal with a situation in the light of the problem.

本文在对我国2004-2006年各省市鲟鱼产量、养殖种类、苗种市场和商品鱼市场的最新变化进行描述的基础上，提出了当前鲟鱼养殖业中存在的有效养殖水域缺乏、消费形式单一、杂交育种缺乏控制、鱼病和鱼药、鲟鱼行业协会亟需建立等新问题，并针对新问题提出了策略。

Through the practice in over twenty years, we came to know that discrimination or desertedness of aids people can not only solve aids problem, but also make the problem become more terrible on the contrary.

二十多年的实践告诉我们，歧视和遗弃艾滋病人不但不能解决艾滋病问题，反而会使问题变得更糟。

In order to study the fatigue of pressure vessel commonly encountered problem in engineering with large destructibility , based on the theory of fracture mechanics , the pressure vessel existing original crack was equivalent to the problem of infinite flat with center crack .

为了分析工程中常见的破坏性极大的压力容器疲劳问题，基于断裂力学理论将存在初始裂纹的压力容器等效为无穷远处作用均匀拉应力的含中心裂纹无限大板问题，解出表面半椭圆裂纹和穿透裂纹的应力强度因子；利用断裂判据得到裂纹的临界断裂尺寸；采用Paris表达式对裂纹扩展速率进行描述，推导出初始裂纹在不同裂纹尺寸和形式下的裂纹疲劳扩展寿命。

This text is based on the work that analyse the problem having emerged about large-scale economic affordable residential district of city at the moment, in instance of the patterns in Xi'an. Through investigating living circumstances and building present situation, there are lots of requirement for economic affordable housing in Xi'an. As large requirement for premise, the question about choosing location large-scale economic affordable residential district in city is researched. As time as, it should be refer to the problem which were founded in others cities, then summarize a correct choosing location model for the practical situation, it could determent the location of large-scale economic affordable residential district of Xi'an.

本文以分析现阶段城市大型经济适用居住区产生的问题为依据，立足西安地区，通过调查该地区居民的居住现状以及房地产开发状况，指出经济适用住房在西安地区具有广泛的需求市场，在这种巨大需求量存在的前提下，探讨大型经济适用居住区选址问题，结合现有其它城市大型经济适用居住区中发现的问题与不足，提出一套适合实际情况的选址模式，并且根据该模式分析了西安大型经济适用居住区选址的区位。

Adolescent deviant problem is a very important problem that effect both the adolescent grow up and harmonious society building.

青少年的越轨问题是一个影响到青少年健康成长和社会稳定和谐的重要问题。

This method dexterously inverts the three-dimension problem into two dimension and properly uses interpolating method. It also can be applied in the other sensor that has same problem.

该方法巧秒地把一个三维的问题转化成二维问题，并加以合理地应用插值数学方法，可以推广应用到存在相似问题的其他类型传感器中。

According to the principle of the diameter of a circle corresponding to the right angle and the principle of short side for little angle in right triangle, projecting the initially-chosen point to the hyper-planes of the linear equation group in which every linear equation can be regarded as a hyper-plane and the projection points can be obtained. The initially-chosen point, and one arbitrary projection point, and the solution point are all on the surface of the relative hyper-geometry ball, therein-to, there is a projection point which is nearest to the solution point and it can be regarded as the next iterative initially-chosen point, so the solution problem of the linear equation group can be changed as an iterative problem of approaching the solution on the surface of a hyper-geometry ball.

根据直径对应的圆周角足直角以及直角三角形中短边对小角的原理进一步知道，当将初始点向线性方程组中各个方程所代表的超平面上投影得到投影点时，初始点和其任何一个投影点及方程组的解点都将位于一个相应的超球面上，其中必定存在一个投影点离问题解点的距离最短，即把该点作为下一次迭代的初始点，从而可将线性方程组求解的问题变成球面上逼近解点的迭代问题。

I think this problem goes back a couple of hundred years to Dickensian times, and although things have improved in some respects the problem hasn't gone away because the underlying factors have remained constant.

我认为这一个问题可追溯至两百多年前的狄更斯时代。虽然在某些方面问题是有所改进，但它并没有消失，因为基本的因素依然存续。

Tom: You are right, he worked hard all the time.

你是对的。他一直都是努力工作。

Take shortcomings,failures,and mockings of others as commonplace and a drive to complete oneself,hold your own opinion over the evalution and disscution divested from others,afterwards sink into the state of eliminate mistakes if any or encourge oneself being not being influenced by the sayinngs of others or having no ideas to do.

把缺点、失败及别人的耻笑等看成是一种常事，当成完善自己的动力，对别人的评价和议论自己心中有主见，做到&有则改之，无则加勉&，不为人言所左右或无所适从。