+ plus
加號(hào);正號(hào)
- minus
減號(hào);負(fù)號(hào)
± plus or minus
正負(fù)號(hào)
× is multiplied by
乘號(hào)
÷ is divided by
除號(hào)
= is equal to
等于號(hào)
≠ is not equal to
不等于號(hào)
≡ is equivalent to
全等于號(hào)
≌ is equal to or approximately equal to
等于或約等于號(hào)
≈ is approximately equal to
約等于號(hào)
< is less than
小于號(hào)
> is greater than
大于號(hào)
≮ is not less than
不小于號(hào)
≯ is not more than
不大于號(hào)
≤ is less than or equal to
小于或等于號(hào)
≥ is more than or equal to
大于或等于號(hào)
% per cent
百分之…
‰ per mill
千分之…
∞ infinity
無(wú)限大號(hào)
∝ varies as
與…成比例
√ (square) root
平方根
∵ since; because
因?yàn)?BR> ∴ hence
所以
∷ equals, as (proportion)
等于，成比例
∠ angle
角
⌒ semicircle
半圓
⊙ circle
圓
○ circumference
圓周
π pi
圓周率
△ triangle
三角形
⊥ perpendicular to
垂直于
∪ union of
并，合集
∩ intersection of
交，通集