查询词典 difficult problem

In this paper, we show that when the data matrices are $2\times 2$ and $3\times 3$-dimensional, we can transfer the problem into an optimization problem with quadratic matrix inequality constraints, based on another equivalent robust optimization problem converted from the original one.

本文表明，当数据矩阵为2乘2阶，3乘3阶矩阵时，我们可以把上述问题转化成二次矩阵不等式约束的最优化问题。

The first kind of the digital signature schemes is based on the discrete logarithm problem and second kind of the digital signature scheme is based on discrete logarithm and factorization problem, the third kind of the digital signature schemes is based on quadratic residue problem.

本文第一章对数字签名方案进行分类，根据数字签名方案所基于的数学问题，将签名方案分为：基于离散对数问题的数字签名方案，基于素因子分解问题的数字签名方案和基于二次剩余问题的签名方案。

There is, however, a case to made against classifying the problem of universals as a problem of metaphysics in the old sense, for there is more to the problem of universals than the question whether universals exist and the question whether, if they do exist, their existence is ante res or in rebus .

有一个说法是反对把普遍性东西的问题归入形上学问题的，因为，普遍性东西的问题，除了"普遍性东西是否存在？"和"假设存在，普遍性东西是"先于客"还是"在客体中"存在？"

Maze problem is a very old problem, the annex to the use of recursive algorithm to solve this problem.

详细说明：迷宫问题是一个很古老的问题，附件中使用递归算法求解这一问题。

This is not a Republican problem, this is not a Democratic Party problem, this is an American problem.

这不是共和党的问题，这不是民主党的问题，这是美国的问题。

The problem has wide applications to various disciplines such as computational complexity theory, organic chemistry etc., and is also closely related with the problem of how to construct cospectral Riemannian manifold in Riemannian geometry and the problem of 'Can one hear the shape of a drum?

该问题的研究在计算复杂性理论、有机化学等领域有着重要应用，并与Riemann几何里面如何构造同谱Riemann流形及物理学里面的'听鼓辨其形状'等问题密切相关。

History division itself is a humanities, and it is the course with a very strong sex that consider debate, emphasize allowing multifarious historical incident to do the sex that consider debate to make an on-the-spot investigation internally, this is with respect to requirement teacher in education process cannot the full hall fill of type of " of reoccupy " force-feed duck, use however introduce guide problem, analytic problem, the schoolteaching means that solves a problem.

历史学科本身就是一门人文学科，而且是一门思辩性很强的学科，强调对内容繁杂的历史事件做思辩性考察，这就要求教师在教学过程中不能再用"填鸭"式的满堂灌，而是用引入导入新问题—分析新问题—解决新问题的授课方式。

The Kyrgyzstan ethnic problems mainly consists two parts: transnational nationality problems (including Russian problem, Uzbek problem, Dong Gan problem) and tribalism and sectionalism.

吉尔吉斯斯坦主要民族问题有跨界民族问题(其中包括俄罗斯人问题、乌兹别克人问题、东干人问题等方面)；部族主义与地方主义问题两个方面。

So, QoS was, is and will always be the hot problem for networks to be researched.QoS problem is not a self-existent problem, but has close relationship with resource management problems.

一方面，用户不希望自己购买的网络服务质量受到侵害，另一方面，网络运营商也希望自己的投入能达到最大的产出。

Based on these considerations, the test sequencing problem is decomposed into test points selection problem and test sequence arrange problem.

为此，将序贯测试问题拆分为测点选择与序测试设计两个问题。

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