a branch of mathematics that deals with addition, subtraction, multiplication, etc.
算术
他在算术方面表现出色，并迅速掌握了心算技巧。
(geometry) a lack of symmetry or equivalence in shape or size between the two sides or parts of something
不对称
在几何课上注意到了三角形的不对称性。
the central point or line around which an object turns
轴, 旋转轴
风扇叶片围绕其轴平稳旋转。
the branch of mathematics that comprises differentials and integrals
微积分, 分析
学生经常学习微积分以理解变化率。
(mathematics) an interdisciplinary theory about complex systems that obey particular laws but appear to have little or no order
混沌理论, 混沌學
天气预报经常使用混沌理论来模拟不可预测的天气模式。
(in geometry) describing shapes of the same size and form
全等, 一致的
全等正方形的所有边长都相等。
(mathematics) a number less than one, called a fraction, that is represented as a period followed by the number of tenths, hundredths, etc.
小数, 十进制数
学生将分数3/5转换为小数以使计算更容易。
a branch of mathematics that studies the strategies of dealing with competitive situations involving conflict of interests, especially in business, war, etc.
博弈论, 游戏理论
在谈判中，博弈论可以揭示使用的最佳策略。
a rectangular array of numbers or symbols organized in rows and columns, commonly used in linear algebra for representing equations, transformations, and vector operations
矩阵, 表格
在解线性方程组时，变量的系数以矩阵的形式排列。
a branch of mathematics that deals with the relationships between the angles and sides of triangles
三角学, 三角学分支
三角函数中的余弦函数（cos）表示邻边与斜边的比率。
the length of a straight line drawn from the center of a circle to any point on its outer boundary
半径, 半直径
圆规是一种用来画圆的工具，半径可调整到所需的尺寸。
(geometry) a symmetrical open curve that is similar to the path of an object thrown into the air passes till it falls back to earth
抛物线, 抛物曲线
艺术家画了一条抛物线来表示飞行物体的路径。
the rate at which a quantity or dimension changes over a given distance or interval
梯度, 坡度
数据中的高梯度表示快速变化。
(mathematics) a statement indicating the equality between two values
方程
物理学家推导出了一个方程来描述能量和质量之间的关系。
(geometry) the length of the external boundary of a curved shape, especially a circle
周长
在几何课上，我们学习了如何找到各种几何形状的周长。
(mathematics) the average value of a set of quantities calculated by adding them, and dividing them by the total number of the quantities
平均数, 算术平均数
测试结果的平均值被用来评估学生的整体成绩。
a straight line from one side of a round object, particularly a circle, passing through the center and joining the other side
直径, 直径
要计算圆的周长，你需要知道它的直径并使用公式 π × 直径。
related to a configuration where two or more components share a common axis or same center point
同轴的, 共轴的
他们使用同轴设计来提高信号质量。
a device used to measure and record precise time intervals
计时器, 时间测量仪
她的新计时码表还可以追踪多个时区。
to examine, repair, and make significant improvements or changes to something
彻底检查, 大修
该组织正计划彻底改革其业务流程以提高效率。
a device used for measuring electrical resistance in a circuit, stated in ohms
欧姆表, 电阻测量仪
技术人员在测量前校准了欧姆表。
a small piece of material that is a semiconductor, used to make an integrated circuit
微芯片, 芯片
微芯片是现代智能手机中的重要组成部分。
a long rigid bar that is put under a heavy object in order to move it
杠杆, 撬棍
机械师用杠杆更换了漏气的轮胎。
a substance that doesn't conduct heat, sound, etc.
绝缘体, 隔热材料
橡胶手套作为绝缘体，防止电击。
a device that allows movement between mechanical parts of a machine or converts backward and forward motion into circular movement
曲柄, 曲轴
机器中的曲柄机构允许对旋转速度进行精确控制。
(mathematics) the number of elements or members in a set, representing its size or quantity
基数, 集合的势
要找到基数，请计算集合中的元素。
to multiply a value or number by itself two times
立方, 三次方
立方2得到2 × 2 × 2 = 8。
a branch of mathematics that focuses on studying rates of change and instantaneous variations through the concept of derivatives
微分学
我们使用微分学来计算移动物体的速度。
a mathematical function that represents the exponent to which a fixed number, called the base, must be raised to produce a given number
对数
她在数学课上用对数解复杂的指数方程。
a number that indicates the position of something in a sequence, such as third, second, etc.
序数, 顺序数
序数 "第三"表示从开始计数的序列中某个项目或个人的位置。
