查询词典 difficult problem

Accord ingly to discuss about these problem is very very difficult.

因此在讨论这些问题是非常困难的。

A more difficult problem is the quantitative description of the secondary breakup of the initial spray by high velocity combustion gas.

一个更困难的问题是关于高速燃气使初始喷雾二次破裂的定量描述。

Vocational teachers training is very important and difficult problem in inland provinces of China.

专业课教师队伍建设，是内地职业教育发展的重点和难点问题。

The results show that the cultivated land area in Wanzhou will slightly decreased while the construction land will slightly increased,forest land will increased dramatically,and it is difficult to improve the ecosystem service value by single increasing the wetland area.Grassland ecological restoration and increasing orchard area will improve the ecosystem service value by comprehensive treatment of geological hazards and soil loss.The ecosystem service theory value in Wanzhou is 11.89 billion yuan each year,the correction value is 10.64 billion yuan each year,and the present value is 9.65 billion yuan each year.This shows the ecological restoration has good economical efficiency.The optimization of land use structures based on ecosystem service value could satisfy the development of social economy with land demand,and realized the benefit of ecology and economy inphase,the study supported a new way to solve the key technical problem in land use programming in China.

计算结果表明：（1）规划期内万州区耕地面积略有减少，建设用地面积有所增加，林地面积有较大幅度增加，大规模增加湿地面积提高土地生态功能价值则难以实现；（2）地质灾害与水土流失综合治理、草地生态系统修复以及适当增加园地面积，能够提高万州区土地生态功能价值；（3）万州区土地生态经济理论价值为11888亿元/a，修正价值为10644亿元/a，均高于现状值9653亿元/a，土地生态修复与建设的生态经济效益可观；（4）基于生态系统服务价值的土地利用结构优化，能够满足社会经济发展对土地的需求并同步实现生态经济效益的最优，为解决土地利用规划中的关键技术问题提供新的方法。

This method is difficult to get instant results, but it is to solve the problem.

这种方法难以立竿见影，但它是解决这一问题。

We will show that the traditional mixed integer programming approach makes the problem difficult to represent and solve.

我们将说明传统的混合整数规划方法使问题难以描述和解决。

The problem that the demand of accuracy, complexity and intelligibility are the very difficult issue however.

对判决精度、计算复杂性和概念的可理解性的要求仍然是人们面临的非常困难的问题。

So our algorithm is more efficient than [3]. Further, we propose the three most difficult interpolation problem. Our algorithm can solve the three problems easily.

另外，本论文还提出了三项具世界级困难度的内插问题，藉由本论文的内插演算法可以轻易解决。

The problem of invariance is both important and difficult in studies of neural retworks.

对不变性的认识，特别是对变换群下的不变性的认识，一直是神经网络系统研究中最重要的也是最困难的问题之一。

Based on scale SVD transform, a target feature extracting method is proposed to solve this difficult problem. The experimental result shows that this method has favorable stability to target matrix's SVD feature vectors, and high invariant property to displacement, rotation and scale.

为解决这一技术难题，文中提出了基于尺度奇异值变换的红外图像目标特征提取方法，实验表明该方法提取的目标矩阵的奇异值特征向量具有较好的稳定性，对图像的平移、旋转和比例变化具有良好的不变性，是一种实用的特征提取方法。

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