第2-1数学方程与比例.pptVIP

Mathematical English Chapter 2 精读课文---入门必读 * * Key points:  useful terms and definitions of Mathematics, equation and geometryDifficult points:  Some geometrical terms Requirements: 掌握所讲课文的生词和词组 2. 理解并掌握课外作业里面的汉译英 3. 理解所讲段落的翻译技巧与方法 New Words Expressions: geometry n. 几何学 function theory 函数论 trigonometry n. 三角学 conception n. 概念 algebra n. 代数学 proposition 命题 equation 方程,等式 definition 定义 mathematical analysis 数学分析 logical deduction 逻辑推理,推论Roman-number n. 罗马数字 notation 符号, 记号 higher mathematics 高等数学 constant n. 常量 differential equation 微分方程 variable adj. 变化的, n.变量 formula 公式 even number 偶数 equation of condition 条件等式 linear equation 线性等式 arithmetic 算术, 算术的 identity 恒等式 algebraic 代数的 numerical 数值的, 数字的 term 项, 术语, 命名为 operation 运算 fraction 分数 dimension 大小,维数,尺寸 2.1 Mathematics, Equation and Ratio Mathematics comes from man’s social practice, for example, industrial and agricultural production, commercial activities, military operations and scientific and technological researches. And in turn, mathematics serves the practice and plays a great role in all fields. No modern scientific and technological branches could be regularly developed without the application of mathematics. 数学来源于人类的社会实践，比如工农业生产，商业活动， 军事行动和科学技术研究。反过来，数学服务于实践，并在各个领域中起着非常重要的作用。 没有应用数学，任何一个现在的科技的分支都不能正常发展。 1－A What is mathematics From the early need of man came the concepts of numbers and forms. Then, geometry developed out of problems of measuring land , and trigonometry came from problems of surveying . To deal with some more complex practical problems, man established and then solved equation with unknown nu