专业词汇|各种标点符号的说法 2

%: percent 百分之

10%读作：ten percent

: per mill ; per thousand 千分之

10读作：ten per thousand

: infinity^{1 无限大号}

－ 读作：negative infinity

: varies as 与...成比率

XY读作：X varies as Y

￣: square root 平方根

￣16=4读作：The square root of sixteen is four.

3￣: cube root 立方根

3￣27=3读作：The cube root of 27 is 3.

∵: since; because 由于

∵1+1=2读作：because one plus one equals two

: hence; therefore 所以

12读作：hence one is less than two

: angle 角

A读作：angle A

A +B+C=180

读作：The measure of angle A plus angle B plus angle C equals 180 degrees.

⌒: 百度竞价推广icircle 半圆

⌒AB读作：百度竞价推广icircle AB

⊙: circle 圆

⊙A读作：circle A

○: circumference 圆周

○=d读作：Pi multiplied by d equals circumference.

: pi constant 圆周率

d读作：pi multiplied by d

△: triangle 三角形

△ABC读作：triangle ABC

What is the area of triangle ABC? 求三角形ABC的面积。

: perpendicular to 垂直于

AB读作：A is perpendicular to B.

//: parallel to 平行于

Line AB is parallel to line CD.

: union of 并，合集

AB读作：the union of A and B

: intersection of 交，通集

AB读作：The intersection of A and B

: the integral of 的积分

x读作：the integral of x

: summation of 总和

x读作：the summation of x

equation 方程式、等式

y = kx 读作：

Y varies as x.

K is the constant of variation.

y与x成正比（y是x的正比函数），k是常数。

y = k/x读作：

Y varies inversely as x.

y与x成反比率（y是x的反比率函数）。