﻿ ﻿﻿﻿ A ~ Z | 玄数
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## y

2012-10-08

y axis   y轴

y coordinate   y坐标

y intercept   y轴截距

year   年

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## x

2012-10-08

x axis   x轴

x coordinate   x坐标

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## 以 w 开头的数学词汇

2012-10-08
weight   重量
The magnitude of the force acting on a body due to gravity. Equal to the mass of the body times the local acceleration of gravity.

whole   整体,全部,所有

• Full, complete, including all parts or aspects, with nothing left out.
• A number, group, set, or thing lacking no part or element; a complete thing.

whole number   整数
A member of the set of positive integers and zero. A natural number.

width   宽
The measurement from one side of sth to the other.

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## 以 v 开头的数学词汇

2012-10-08
value   值
A quantity or number expressed by an algebraic term.

variable   变量

• A quantity capable of assuming any of a set of values.
• A symbol, especially ‘x’, ‘y’, or ‘z’, that is used usually in connection with quantifiers to represent individuals in a universe of discourse.
• Computing a named unit of storage that can be changed to any of a set of specified values during execution of a program. (Computer Science)

vector   向量
A quantity that has both direction and magnitude, e.g. force or velocity, usually represented by an arrow. vertex   顶点
The point where two lines meet to form an angle, especially the point of a triangle or cone opposite the base.

vertical   垂直的
Being or situated at right angles to the horizon; upright. Going straight up or down from a level surface or from top to bottom in a picture, etc.

vertical angles /  vertically opposite angles   直角
Two angles formed by two intersecting lines and lying on opposite sides of the point of intersection.

vinculum   插线
A bar drawn over two or more algebraic terms to indicate that they are to be treated as a single term. Such as  volume   体积
The amount of space that an object or a substance fills; the amount of space that a container has.

vulgar fraction   普通分数
A fraction (= a number less than one) that is shown as numbers above and below a line. Another name for simple fraction or common fraction.

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## 以 u 开头的数学词汇

2012-10-08
undecagon   十一边形
A polygon having eleven sides.

unequal   不等于
Not the same in any measurable aspect, such as extent or quantity.

union 并
Also called join, logical sum, sum. The set consisting of elements each of which is in at least one of two or more given sets. Symbol: ∪.

unit fraction   单位分数
A rational number written as a fraction where the numerator is one and the denominator is a positive integer. A unit fraction is therefore the reciprocal of a positive integer, 1/n. Examples are 1/1, 1/2, 1/3, 1/4 ,1/5, etc.

unit of measurement   计量单位
Any division of quantity accepted as a standard of measurement or exchange; “the dollar is the United States unit of currency”.

unit price   单价
A price for foodstuffs, etc, stated or shown as the cost per unit, as per pound, per kilogram, per dozen, etc.

unit vector   单位向量
A vector having a length of one unit.

units   单位

• The lowest positive whole number; one.
• An element of a ring with a multiplicative inverse.

univariate   单变量
Having or using only one variable.

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## 以 t 开头的数学词汇

2012-10-08
table   表，表格 An arrangement of information or data into columns and rows or a condensed list.

tangent   正切；切线

• For a given angle in a right-angled triangle, a trigonometric function equal to the length of the side opposite the angle divided by the length of the adjacent side.
• Let P be a point on a curve, the tangent to the curve at P is the line through P that touches the curve at P, but never cross or intersect the curve.

tangram   七巧板 A Chinese puzzle consisting of a square cut into five triangles, a square, and a rhomboid, to be reassembled into different figures. temperature   温度 A measure of the warmth or coldness of an object or substance with reference to some standard value.

tenth   第十；十分之一

• The ordinal number matching the number ten in a series.
• One of ten equal parts.

term   项 Each of the members of which a mathematical expression, a series of quantities, or the composed.

terminating decimal   有限小数 A decimal that has only a finite number of nonzero digits to the right of the decimal point. Also known as finite decimal.

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## 以 s 开头的数学词汇

2012-10-08
sample   样本
A set of data or elements drawn from a larger population and analyzed to estimate the characteristics of that population.

scale   规模，尺度，比例，比例尺，天平

• A proportion used in determining the dimensional relationship of a representation to that which it represents: a world map with a scale of 1:4,560,000.
• A system of notation in which the values of numerical expressions are determined by their places relative to the chosen base of the system.
• A balance or any of various other instruments or devices for weighing

scale drawing   缩尺图

scalene triangle   不等边三角形
A triangle whose sides are all of different lengths.

scatter plot, scatter graph, scatter chart, scattergram, scatter diagram  散点图
A type of plot or mathematical diagram using Cartesian coordinates to display values for typically two variables for a set of data. scientific notation   科学记数法
A way of expressing numbers that are too big or too small to be conveniently written in decimal form, multiplied by 10 to the appropriate power, as 1385.62 written as 1.386 × 103.

seasons   季度
One of the four natural divisions of the year, spring, summer, autumn, and winter, beginning astronomically at an equinox or solstice, but geographically at different dates in different climates.

secant   正割；割线

• A straight line intersecting a curve.
• A trigonometric function that in a right-angled triangle is the ratio of the length of the hypotenuse to that of the adjacent side; the reciprocal of cosine.
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## 以 r 开头的数学词汇

2012-10-08
radian   弧度
A unit of angular measure equal to the angle subtended at the center of a circle by an arc equal in length to the radius of the circle, approximately 57°17′44.6″. radical   根

• A root of a number or quantity.
• The set of elements of a ring, some power of which is contained in a given ideal.

radicand   被开方数
A number or quantity from which a root is to be extracted, under a radical sign: 3 is the radicand of √3.

radius   半径
A straight line extending from the center of a circle or sphere, or regular polygon to the circumference or surface.

radix   根；基数

• The base of a system of numbers, such as 2 in the binary system and 10 in the decimal system.
• The base of a system of logarithms.

random   随机
Statistics. of or characterizing a process of selection in which each item of a set has an equal probability of being chosen.

random Sample   随机抽样
A sample in which every element in the population has an equal chance of being selected.

range   区间；范围；排列

• The set of all values attained by a given function throughout its domain.
• The maximum extent or distance limiting operation, action, or effectiveness, as of a sound, radio signal, instrument, firearm, or aircraft.
• To place or arrange systematically; set in order.

range of a function   函数的值域
The set of values of the dependent variable for which a function is defined. For example: the image of f(x) = x2 is the set of all non-negative real numbers if the domain of the function is the set of all real numbers.

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