AEAS常用數學符號的英語單詞，高頻詞匯常見符號。更多AEAS真題下載：aeas.englang.cn
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＋
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plus ;positive
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－
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minus ;negative
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×
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multiplied by ;times
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÷
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divided by
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＝
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equals
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≈
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approximately equals
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≠
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not equal to
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＜
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less than
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＞
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greater than
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≤
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equal to or less than
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≥
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equal to or greater than o
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( )
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round brackets ;parentheses
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[ ]
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square brackets
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{ }
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braces
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∈
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is a member of the set
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⊂
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is a subset of
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∽
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similar to
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≌
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congruent to
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*
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denotes an operation
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∴
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therefore
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∵
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because
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∶
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ratio sign, divided by, is to
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∷
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equals, as(proportion)
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square root of
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cube root of
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∥
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parallel to
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⊥
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perpendicular to, at right angles with
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∠
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angle
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∟
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right angle
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º
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degree
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′
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minute
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″
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second
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⊙
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circle
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A⁀B
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arc AB
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e
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the base of natural logarithms,approx.2.71828
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x!
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factorial x, x(x-1)(x-2)---1
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lognx
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log x to the base n
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π
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pi
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lnx
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log x to the base e(natural logarithm)
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lgx
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log x to the base 10(common logarithm)
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|x|
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the absolute value of x
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