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一个困难
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  a difficulty
     3. A difficulty that the integration framework is confronted with is the semantic mismatch when two heterogeneous Agents using different ontology to communicate with each other.
     3.集成框架面临的一个困难是使用不同本体论的Agents在通信时会出现语义失配问题。
短句来源
     We can find out that from 2 meters to 20 meters is a difficulty for the several mainly electromagnetic methods, but this domain is closed related with human’s activity.
     由此可见,地下2~20米范围对于以上几种方法来说都是一个困难,而这一范围却与人类活动极为密切。
短句来源
     3. Edge enhancement is a difficulty of image processing. There is often noise in image, noise and edge are all high frequency signal, which are difficult to distinguish;
     3.边缘检测是图像处理中一个困难的问题,在图像中往往还存在有噪声,噪声和信号边缘一样都属于高频信号,很难用频带来进行取舍;
短句来源
     Carried on the quantification quality synthetic evaluation to the management is the question which is a difficulty but also is worth studying.
     对高层管理人员进行量化综合评价是一个困难而又值得研究的问题。
短句来源
     parking of the car is a difficulty thing when all families possess the car, putting garages beneath the existing residence buildings is a good method but it will exist some technical problems concerning buildings' safety.
     轿车进入家庭之后,车辆的存放是一个困难的问题,在现有住宅建筑之下增建地下车库是解决停车问题的好方法,但存在一些影响建筑物安全方面的技术问题。
  “一个困难”译为未确定词的双语例句
     Given M>0,assume that 0λ_1<λ_2<…, and λ_(n+1)-λ_n≥Mn~2 for every n≥1,this paper gives a pointwise Jackson type theorem for rational approximation of Müntz system{x~λ_n}
     Müntz系统的非线性使得其逼近速度刻画成为一个困难的问题 . 本文考虑条件λn+ 1 -λn ≥Mn2 下 ,Müntz系统 {xλn}有理逼近的一个点态Jackson型估计 ,这是对J.
短句来源
     Based on the ability of dependence analysis in the software testing area, this paper do some research as following:In automatic test data generation, one of the most difficult problems in static analysis is the ambiguity of program variable.
     基于对依赖性分析在软件测试中的应用能力分析,本文进行了以下一些研究工作:软件测试数据自动生成是软件测试的一个重要研究领域,其中数组变量和指针变量导致的变量不确定问题是测试数据自动生成中的一个困难问题,本文通过理论分析得出非定态路径约束解空间可进一步划分为多个子空间的结论。
短句来源
     It was pointed out that even if for m ≥ 3, the existence of C~m solutions of the linear iterative functional equation F(x) - = 0 is a difficult and very interesting problem.
     有关文献指出,当m≥3时,即使是线性型的迭代函数方程F(x)-∑_(k=1)~nλ_kf~k(x)=0的C~m解的存在性也是一个困难而很有意思的问题。
短句来源
     5. The topology of effect algebra is very important, but it is difficult to study.
     5.建立量子逻辑的内蕴拓扑是一个困难而重要问题,我们以效应代数的理想为工具,借助于一致结构理论,得到了效应代数上的理想拓扑。
短句来源
     It is a difficult problem to assess high power microwave (HPM) susceptibility ofelectronic devices or electronic systems.
     电子器件或电子系统的高功率微波易损性评估是一个困难的问题。
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     Designing a Web site is a complex problem.
     站点设计是一个复杂和困难的问题。
短句来源
     Feller.
     Feller提出的一个似乎很困难的问题.
短句来源
     One Evening
     一个夜晚
短句来源
     is a homomorphism from H to F.
     是一个从 H 到 F的同态.
短句来源
     Clinical diagnosis is difficult to make out.
     临床诊断困难
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  a difficulty
Our proofs proceed in the time domain and allow us to represent each solution regardless of the spectral radius of P(0):=2-s∑cα, which has been a difficulty in previous investigations of this nature.
      
However, the calculation explosion effect in computation of association probabilities has been a difficulty.
      
Next to this, the most common factor cited as a difficulty in treatment was the low level of cooperation and motivation for treatment on the part of the patients' immediate families.
      
The literature concerning ±θ laminates under mode II (propagation mode) loading encounters a difficulty in calculation of the structural dimensions.
      
It is a difficulty problem to measure permittivity of a dielectric material accurately whose permittivity is very close to unit.
      
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In the determination of crystal structures containing heavy atoms, special arrangement of the heavy atoms leads often to the failure of determining uniquely the positions of the light atoms. This is the case not only occured frequently in Patterson analysis but also in heavy-atom method ar direct methods. Hence it is a common difficult problem in crystal structure analysis. The authors have proposed systematically a series of procedures to tackle this problem. The present paper deals with the general rule on...

In the determination of crystal structures containing heavy atoms, special arrangement of the heavy atoms leads often to the failure of determining uniquely the positions of the light atoms. This is the case not only occured frequently in Patterson analysis but also in heavy-atom method ar direct methods. Hence it is a common difficult problem in crystal structure analysis. The authors have proposed systematically a series of procedures to tackle this problem. The present paper deals with the general rule on the appearance of multiple solution in the determination of crystal structures containing heavy atoms. It is concluded that whenever the distribution of heavy atoms possesses higher symmetry than that of the light atoms by an additional inversim centre and lor sulperiodicity of translation, multiple solution would be obtained for the light atoms that two or more structure images of the light atom portion related by the additional symmetry would result simultaneously.

在测定含重原子晶体的结构时,往往由于重原子分布的特殊性,使轻原于的位置不能唯一地确定,这种情况不仅常常出现在Patterson分析中,而且也常常出现在重原子法和直接法中,因此它是单晶体结构分析中常常遇到的一个困难问题。作者以前曾经系统地提出过处理这个问题的办法,本文则阐明用各种方法测定含重原子的晶体结构时,轻原子位置出现多解情况的一般规律。

The optimal design of gravity dam section based on mechanics of materials is a problem of nonliear programming of high order. However, we have found in our research, if the method of geometric programming is used, the problem to be solved is of geometric programming with negative coeffients. As a further development of the iteration proposed by Awiel and williams [7], with use of monomias instead of original equations on the specified points the problem of positively definite geometric programming with zero...

The optimal design of gravity dam section based on mechanics of materials is a problem of nonliear programming of high order. However, we have found in our research, if the method of geometric programming is used, the problem to be solved is of geometric programming with negative coeffients. As a further development of the iteration proposed by Awiel and williams [7], with use of monomias instead of original equations on the specified points the problem of positively definite geometric programming with zero degree of difficulty is deduced. As a result, the iterafive process is simplified and accelerated. In addition, for the purpose of avoiding oscillation in iteration, we have carefully studied the kinematic limit and an empericat formula with emparicat coefficients is proposed, Accrding to fhe final results obtained, we conclude that the experince as well as the solutions recommended here are simple and available.

基于材料力学分析的重力坝断面优化设计所得的是一个高次的非线性规划问题,我们研究得出采用几何规划法求解时,所得的是一个带负系数的几何规划问题.我们又在Awiel与Williams建议的迭代法的基础上,在指定点用单项式代替原约束方程式后所得的是一个困难度为零的正定几何规划问题,这样就简化并加速了迭代过程.另外,我们为了防止迭代的振荡,对迭代的运动极限作了深入研究,提出了一个经验公式和经验系数.从最后的成果看,这里介绍的解法和经验还是简单易行的.

The maximum entropy spectrum analysis method presented by J. P. Burg in 1967 is an improved method for estimating power spectrum, which can effectively improve the resolution of a power spectrum. However, it remains difficult to choose correct filter operator length in designing a predictive error filter. Several methods for determining filter operator length having been compared by using actual examples, the empirical formula presented by J. G. Berryman is considered effective in the estimation of power spectrum...

The maximum entropy spectrum analysis method presented by J. P. Burg in 1967 is an improved method for estimating power spectrum, which can effectively improve the resolution of a power spectrum. However, it remains difficult to choose correct filter operator length in designing a predictive error filter. Several methods for determining filter operator length having been compared by using actual examples, the empirical formula presented by J. G. Berryman is considered effective in the estimation of power spectrum of seismic information.

J.P.伯格(1967)提出的最大熵谱分析方法是一种改进的功率谱估算方法,它可以有效地提高功率谱的分辨率。但是,在设计预测误差滤波器的时候,如何正确地选择滤波器的长度仍是一个困难。本文用实例比较了几种确定滤波器长度的方法,认为J.G.Berryman提出的经验公式对于估算地震信息的功率谱是有效的。

 
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