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数概念     
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  number concept
     The Role of Image in the Development of Child's Number Concept
     表象在儿童数概念发展中的作用
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     This review is an attempt to describe several aspects of MD studies: complexities in identifying and defining MD, influence of components of working memory on MD, number concept and counting knowledge in MD children, strategy characteristics and development in MD children.
     本文阐述了MD研究的几个主要的方面:MD界定 与鉴别的复杂性、工作记忆各个成分对MD的影响、MD数概念与计数知识的发展、MD算术策略的特征及发展。
短句来源
     THE STUDY ON THE DEVELOPMENT OF THE NUMBER CONCEPT AND OPERATIONAL ABILITY IN SCHOOLCHILDREN
     小学儿童数概念与运算能力发展的研究
短句来源
     It was important to, by realizing the importance of number sense in mathematics education, cultivate a number sense among the students in the teaching of number concept, in the teaching of number manipulations and in the guidance of student problem solving processes.
     在数概念教学与数的运算教学中,在指导学生解决现实问题的过程中培养学生的数感.
短句来源
     In this paper,we preliminarily study the history of mathematics development of the Shui Nationality, from the following four aspects: (1) shui ancient folk songs, ancient caracters, number concept and objects and keeping accounts with notches cut on wood;
     本文在调查、搜集、整理有关水族数学史方面资料的基础上,对水族的数学发展史从如下四个方面作了初步研究:(1)水族古歌、古文字与水语中所反映的数概念及实物、木刻的记数方法;
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  numeral concept
     In this article the author tells how to teach children to learn the combination of the numbers by making full use senses and how to teach the children to form the numeral concept by using the forms of playing games and literary arts.
     本文从充分利用各种感官、教幼儿学习数的组成及运用游戏、文学、艺术等形式 ,论述了帮助幼儿形成数概念的过程、方法
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  “数概念”译为未确定词的双语例句
     THE CURRENT DEVELOPMENTAL PSYCHOLOGY IN CHINA——WITH PARTICULAR REFERENCE TO THE DEVELOPMENT OF NUMBER-CONCEPTS OP 3—12 YEARSOLD CHINESE CHILDREN
     中国现时的发展心理学——兼谈中国3—12岁儿童数概念和运算能力的发展
短句来源
     The Concept of Compound Blind Number & Comprehensive Treatment for Information
     复盲数概念与信息的综合处理
短句来源
     The Application of the Concept of Oxidation Number in the Teaching of Senior Chemistry
     氧化数概念在高中化学中的应用
短句来源
     On the basis of analyzing the characteristics of cutting process and the least square regression method, two fuzzy prediction models of cutting force based on maximum minimum and mean values of measured force as well as the conception of symmetric fuzzy number are established.
     在分析切削过程特征和最小二乘回归法的基础上,建立了两种基于切削力实测平均值、最大最小值及对称模糊数概念的切削力模糊预测模型。
短句来源
     The situation that denominator is zero is excluded in the fuzzy number operation[1]Vsing the projection opinion,This paper develops the conception of the fuzzy number,so that the application range of the fuzzy number is expanded.
     在〔1〕的模糊数运算中,排除了零为分母的情况.用射影观点,对模糊数概念进行推广,从而加大了模糊数的应用范围.
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  number concept
The virtual carbon number concept is investigated.
      
Based on the gain-number concept, canonical forms will be presented of the ambiguity search spaces of the geometry-based model, the time-averaged model, and the geometry-free model.
      
An extension of Reiner's "Deborah Number" concept to a Wide field of rheological investigations
      
A version of the equivalent carbon number concept, utilizing the Snyder polarity index, was used to identity the molecular species.
      
These results agree with those of other studies of number concept in nonhuman primates and lend further support to the idea that nonhuman primates have at least some type of number appreciation.
      
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  quantity concept
This quantity concept yields excellent results in fundamental research under controlled environmental conditions.
      
Therefore, only a few strategies based on the quantity concept have been published, aimed at applications in horticultural production.
      


By extending the concept of isospin and Strangeness' to leptons, We have determined the isospin T and Strangeness S for leptons from the generalized Gell-Mann -Nishijiraa formula. Then, With the aid of the selection rule of the total Strangeness , We obtain a Lang-rangian of weak interactions with the "current and current" coupled form of weak currents in place of the "(total current)X (total current)" coupled form, which is Suggested by Fcynman and Gell-Mann. This model has the following Properties for the...

By extending the concept of isospin and Strangeness' to leptons, We have determined the isospin T and Strangeness S for leptons from the generalized Gell-Mann -Nishijiraa formula. Then, With the aid of the selection rule of the total Strangeness , We obtain a Lang-rangian of weak interactions with the "current and current" coupled form of weak currents in place of the "(total current)X (total current)" coupled form, which is Suggested by Fcynman and Gell-Mann. This model has the following Properties for the weak interactions: (i) Whirh Produces AS=+AQ processes for the leptonic decay of Strangeparticles; (ii) Which forbids AS >1 processes; (in) Which obeysapproximately the 1/2 rule for the nonleptonic weak process ofStrange particles; (iv) absence of the neutral leptonic weak currents; (v) absence of the neutrino flip processes; (vi) which is consistent with the intermediate vector boson theory.

将同位旋与奇异数的概念推广到轻子,借助推广了的Gell-Mann-Ni-shijima公式,确定轻子的同位旋T与奇异数S。然后,从总奇异数的选择规则|△S|≤1出发,代替Feynman与Gell-Mann的“(总流)×(总流)”耦合形式的弱相互作用拉格朗日函数,我们得到一个由“流与流”耦合表征的弱相互作用拉格朗日函数。本模型具有以下一些主要性质:(i)能引起△S=±△Q的奇异粒子的轻子衰变;(ii)将禁戒|△S|>1的过程;(iii)奇异粒子的非轻子衰变近似地遵从|△(?)|=1/2定则;(iV)不存在中性轻子弱流;(Vi)能与传递弱相互作用的蹭矢量玻色子理论相容。

A series of Pt-Al2O3 catalysts were investigated by the CS2 poisoning method. For characterizing the nature of active site, a new expression was suggested: the activity frequency was used to relate the strength of active site and the concept of number of multiplet active atoms was introduced for describing the mode of active site forming, based upon which the calculating formulas and the method of measurement were proposed.

本文对金属催化剂活性中心性质提出了新的表征方法,即用活性频率量度活性中心的强度,用原子组合数的概念描述原子组成活性中心的方式,在此基础上提出了活性频率和活性中心原子组合数的计算公式与新的测定方法。 从测出的活性频率和活性中心原于组合数的数据,发现了Pt-Al_2O_3催化剂具有两种活性中心即α和β中心。α中心CS_2的吸附能力比β中心强,但β中心对环己烷的脱氢活性比α中心强。同时证明了不管在α中心或在β中心上环己烷的脱氢反应都是在双位中心上进行的。 本文还考察了锡和铼对铂催化剂性能的影响,实验表明锡和铼都能从结构效应和电子效应方面影响铂的催化性能。

In this paper, we study the L-restricted alphabetical binary trees with cost function being a nondecreasing convex function. A binary tree T is Called au L-restricted binary tree if length l_i of the i-th leaf satisfiesl_i≤L for i=1,2…,n.An algorithm is given for constructing an optimal L-restricted alpbabeticai binary tree. A concept of separating number is introduced and a fundamental theorem is proved. By means of fundamental theorem, the amount of computation of algorithm is in proportion to O(n~2L). Problem...

In this paper, we study the L-restricted alphabetical binary trees with cost function being a nondecreasing convex function. A binary tree T is Called au L-restricted binary tree if length l_i of the i-th leaf satisfiesl_i≤L for i=1,2…,n.An algorithm is given for constructing an optimal L-restricted alpbabeticai binary tree. A concept of separating number is introduced and a fundamental theorem is proved. By means of fundamental theorem, the amount of computation of algorithm is in proportion to O(n~2L). Problem of L-restricted Huffman trees is discussed and algorithm is given, in which the amount of computation is in proportion to O(n~2L).

本文给出了一个构造具有最大路长限制的最小价格顺序二分树的算法;引进了分界数的概念。并证明了关于分界数的基本定理,从而使算法的计算量同O(n~2L)成比例,文中还讨论了具有最大路长限制的Huffman树问题,给出相应的算法,计算量也为O(n~2L)。

 
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