= is equal to 等于号
is not equal to 不等于号
is equivalent to 全等于号
≌ is equal to or approximately equal to 等于或约等于号
is approximately equal to 约等于号
is less than 小于号
is more than 大于号
≮ is not less than 不小于号
≯ is not more than 不大于号
is less than or equal to 小于或等于号
is more than or equal to 大于或等于号
% per cent 百分之
per mill 千分之
infinity 无限大号
varies as 与成比例
root 平方根
∵ since; because 因为
hence 所以
∷ equals, as 等于,成比例
angle 角
⌒ semicircle 半圆
⊙ circle 圆
○ circumference 圆周
pi 圆周率
△ triangle 三角形
perpendicular to 垂直于
union of 并,合集
intersection of 交,通集
the integral of 的积分
summation of 总和
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