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难度     
相关语句
  difficulty
     Identifying and Controlling Writing Task Difficulty Factors in English Tests
     英语写作题难度影响因素及控制
短句来源
     A PRELIMINARY REASEACH ON QUANTIFICATION AND DECISION ANALYSIS FOR THE EXTENT OF DIFFICULTY OF MATHEMATICS TEXTBOOK IN MIDDLE SCHOOL
     关于中学数学教材难度问题的定量化与决策分析初探
短句来源
     Analysis on the Difficulty Series of Reverse Hanging in High Low Bars
     高低杠反吊难度系列的分析
短句来源
     TWO FUNDAMENTAL FACTORS AFFECTING THE CONCEPT DIFFICULTY
     影响概念难度的两个基本因素
短句来源
     Statistical Analysis to Degree of Difficulty for an Examination Paper and Teaching Effect
     试卷难度与教学效果的统计分析
短句来源
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  difficult
     Extremely Difficult Cluster Drilling in SZ 36—1 Oil Field in Liaodong Bay
     辽东湾SZ36—1油田高难度丛式钻井
短句来源
     Formula Solution of One-Difficult-Level Positive Term Geometric Programming
     难度为1的正项几何规划的公式解法
短句来源
     (49.2%) of them thought that the objectives of bilingual teaching should keep up with the international community,(20.6%) thought that bilingual teaching was something like following the suit,and(70.9%) were worried that it might make specialized courses more difficult to study.
     49.2%的学生认为双语教学的目标应该尽量与国际医学接轨,20.6%的学生认为目前双语教学的目的只是赶潮流; 70.9%的学生担心这样会增加专业课学习的难度;
短句来源
     As S7-300/400 series PLC(Programmable Logic Controller) is node controller based on field bus net,it is difficult to develop the communication software on Lab Windows/CVI platform for its privacy of communication protocol.
     西门子S7-300/400系列可编程逻辑控制器(PLC)是基于现场总线网络的节点控制器,其通信协议不开放增加了在Lab Windows/CVI等平台上开发通信驱动软件的难度
短句来源
     Quality & Reliability management for large, high tech and complex systems integrated hardware & software is very difficult.
     大型复杂软硬件综合系统的技术含量高,其质量与可靠性管理有较大难度,必须适应技术进步,针对其特点发展和尽可能采用先进的方法。
更多       
  difficulties
     2.Item analysis:In each edition,the item difficulties between 0.20 and 0.80 were 75.5% and 71.4%,the test score were distributed normal approximately;
     2、项目分析:A、B题本项目难度分布在0.20~0.80之间的项目分别占75.5%和71.4%,测验总分的分布接近正态分布;
短句来源
     Difficulties in Construction and Phased Acceptance '2002
     2002年三峡工程建设难度和阶段验收
短句来源
     This model's basic thought is to set parameters of this combination forecast model by the learning ability of genetic algorithm to decrease the difficulties of constructing nonlinear combination forecast function.
     其基本思想是利用遗传算法的学习能力确定组合预测模型的参数,降低了构造非线性组合预测函数的难度,将该模型的预测结果与传统的最优组合预测模型和各单项模型的预测结果比较可见,预测效果要优于传统的预测模型。
短句来源
     Fenghuoshan Tunnel is the highest tunnel in the world with unique geological and climatic conditions and great difficulties.
     风火山隧道是世界上海拔最高的隧道 ,地质条件和气候条件均极为特殊 ,隧道的施工难度极大。
短句来源
     Analysis on the Cause of the difficulties in Formation of EVA Evaluation System
     EVA评估体系实施难度成因分析
短句来源
更多       
  degree of difficulty
     Results The degree of difficulty reached the idealvalues (the value for city being 0.62, 0.58 for rural area); the different degree was very good (rpb > 0.195, P < 0.05),80% of the testing questions had a distinguishing index D > 0.2, the reliability was very high(correlation coefficientrtt= 0.91), and the validity was ideal.
     结果试题的难度达到理想值(城市为0.62,农村为0.58),区分度较好(rpb>0.195,P<0.05),鉴别指数D>0.2的测试题占80%,复测信度高(相关系数rtt=0.91),构想效度较高。
短句来源
     In 3m-order,4m-order,5m-order and 7m-order bimagic squares,the maximal structural degree of difficulty is 3m order bimagic square. By making use of the placement of magic squares and the known bimagic square composition,SU Maoting and GAO Zhiyuan have successfully structured 30-order,33-order,39-order,42-order,51-order,54-order,57-order bimagic squares.
     3m、4m、5m、7m阶平方幻方中,构造难度最大的是3m阶平方幻方,苏茂挺、高治源利用九宫图的布局和已知的平方幻方合成,成功构造了30阶、33阶、36阶、39阶、42阶、51阶、54阶、57阶平方幻方。
短句来源
     The change of the rural economic system has greatly increased the degree of difficulty of extension of agricultural scientific and technical result ,and new popularization system and mode are urgently needed.
     农村经济体制的改变大大增加了农业科技成果推广的难度,迫切需要新的推广体系和模式与之相适应,并且要求切合我国农村实际,迎合农民心理,节省推广投入,克服技术屏壁。
短句来源
     The Evaluation System and the Model of Controlling of Degree of Difficulty of the Test Paper
     试卷难度评估体系与控制模型
短句来源
     The average marks from the degree of difficulty and the technique by our male trampolinist are lower than 2.5 and 2.14 point comparing with the world level, and our female trampolinist are lower than 2.85 and 3.12 points.
     男子运动员动作难度分、技术分与世界水平运动员平均相差 2 .5分和 2 .14分 ,女子运动员平均相差 2 .85分和 3.12分 ;
短句来源
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  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.
      
It in fact not only reduces the possibility of difficulty arising from degeneracy, but also has the same advantages as pivot method in warm-start to resolve linear programming problems.
      
The PML technique is used to deal with the difficulty on truncating the unbounded domain while the DSC algorithm is utilized for the spatial discretization.
      
To circumvent this difficulty, this paper presents a novel hybrid numerical technique of combined difference and spectrum for time-domain Maxwell's equations.
      
A nonlinear proportion integration differentiation (PID) controller is proposed on the basis of recurrent neural networks, due to the difficulty of tuning the parameters of conventional PID controller.
      
更多          
  difficult
For modular representations the ring of invariants usually fails to be Cohen-Macaulay and computing the depth is often very difficult.
      
This can be viewed as a first step towards the difficult open
      
Pancreatic cancer is not only common, but also extremely difficult to treat, for which it has been called "the challenge of the twenty-first century".
      
Many difficult (often NP-complete) optimization problems can be solved efficiently on graphs of small tree-width with a given tree-decomposition.
      
In ambient air, the Li-Ti-O compound adsorbs water easily, and the chemically adsorbed water is difficult to remove below 400°C.
      
更多          
  difficulties
In this article we overcome these difficulties and give a more complete characterization of this nature.
      
This fact causes considerable difficulties in producing lower dimensional examples of tiles which have no spectra.
      
We overcome these difficulties by invoking some ideas of Révész and Farkas [2], and obtain nonspectral tiles in ${\Bbb R}^3$.
      
The Adomian decomposition method is straightforward, applicable for broader problems and avoids the difficulties in applying integral transforms.
      
Next, active contours have difficulties progressing into boundary concavities.
      
更多          
  degree of difficulty
The simple method used to characterize these fragments led to powerful tools for recognizing genomes which reconcile the section organization of the genus and the degree of difficulty in crossing perennial and annual forms.
      
By this test method each panel member is given a value which takes into consideration the degree of difficulty of each individual test.
      
The observed plastic changes appeared to be related to the degree of difficulty in the motor task, and may be of relevance for rehabilitation of gait disorders.
      
Close cooperation between general surgical departments and centers for vascular surgery allow optimal and differentiated treatment of each case according to the degree of difficulty.
      
Four examples are included, with growing complexity and degree of difficulty.
      
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