数学

Based on detailed mathematical model of the heat and mass transfer processes in packed-type counterflow liquid desiccant systems, a set of linear ordinary differential equations describing the transfer processes is obtained by some appropriate simplications.

在建立逆流填料式液体除湿系统传热传质过程的数学模型基础上，通过合理的简化处理，导出了描述这一热质传递过程的常微分方程组，得到了相应的解析解；并与精确数学模型的数值解进行了对比，二者具有良好的吻合性；利用解析解分析了各参数对除湿性能的影响；所得解析解具有较好的理论及应用价

Based on detailed mathematical model of the heat and mass transfer processes in packed type counterflow liquid desiccant systems,a set of linear ordinary differential equations describing the tramsfer processes is obtained by some appropriate simplications.

通过对逆流填料式液体除湿系统传热传质过程数学模型的合理简化，推导出描述这一热质传递过程的常微分方程组的分析解，并与未简化数学模型的数值解作对比，二者具有良好的吻合性。

The ground stage mathematical model includs aerodynamics and the counterforce from the ground.

从飞行器的力和力矩角度对直升机进行建模，该模型包括地面阶段数学模型和离地阶段数学模型。

In this paper, under the guide of modern pedagogy, psychology and mathematical education theory, the cause for the problem and countermove were discussed and studied.

在数学学习中，她们存在的主要问题是课堂听课质量不高、数学阅读有障碍及综合解决问题的能力较差。

In addition, critical thinking is the premise of creative thinking, so the study of critical thinking provides a new angle of view to the study of creative thinking.

因此，数学批判性思维的研究对于我们更加深刻认识数学思维品质的完整结构具有重要意义。

Reliable cryptograph is set up in math and formal computer science. According to the computational theory, the paper expounds mathematical background for public-key cryptosystem including: the complexity of algorithm and problem, relationship between the length of key and security of cryptogram.

可靠的密码学是建立在数学和形式化的计算机科学产生的结论之上的，本文从计算理论的角度阐述了构建对称密码体制所需的数学背景：算法复杂性与问题复杂性的关系；NP问题与密码学的关系；密钥长度与密码安全的关系。

In the third part, by looking into traditional roles of teachers, I mainly put forward that under the implement of mathematics course standard, the role of the mathematics teachers in high schools is the organizer, instructor, participant in the study of the students, the cultivator of the study ability of the students, the researcher of the community types, the builder of the course ,culturist of the education teaching ,the open teacher of teaching introspect. And by analyzing the factors that influence the roles of teachers, we know that the key is to improve teachers'quality.

第三部分通过对传统的教师角色的透视，笔者提出在实施数学课程标准下中学数学教师的角色主要是学生学习的组织者、指导者、参与者、学生学习能力的培养者、教学反思的实践者、教育教学的研究者、课程的建设者和开发者、社区型的开放教师，并通过分析影响教师角色定位的因素，得出教师素质及时地得以提升是促进教师角色定位的关键。

Matrix differential system; Damped term; Oscillation; Riccati transformation; Integral average

基础科学，数学，数学分析矩阵微分系统；阻尼项；振动性； Riccati变换；积分平均

This paper analyses the "hardware system"and"software system"of ancient Chinese mathematicalmechanization from the standpoint of Modern computer technique,putting stress on analysing that counting rod is thematerial base of ancient Chinese mathematical mechanization.S-uperior computting tool and decimal number system supply themathematical mechanization with particularly favourable n

论文关键词算筹/筹算/算法/数学机械化counting rod/rod—arithmetic/algorithm/mathematicalmechanization，论文来源大自然探索5，论文单位重庆，点击次数 27，论文页数 117～121页1998年1998月论文网 http：//www.lw23.com/paper_104518381/本文从现代计算机技术的角度来分析中国传统数学机械化的"硬件系统"和"软件系统"。

The traditional GIS system can only use mathematic method to describe and explain the confirmed programs but the power of making space decision and solving the uncertain programs are very weakly.

但是，传统的地理信息系统解决问题的方法和模式基本上都是以数学方法为基础建立的，所能解决的有关地理问题也主要是那些能够用数学方法描述和解释的具有确定性解的问题，在解决空间规划决策中有很大的不足。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。