、常用希腊字母 小qphi o delta p 三、分数、小数及百分比 /2 a(one)half 0.20(nought, zero) point two 1/3 a(one)third 0.0032 0 point 0 0 three two 1/4 a (one)quarter 63. 57 sixty-three point five seven 1/9 a (one)nineth 52%,52pc fifty-two per cent 2/3 two-third 3%o three per mil(thousand) 5/16 five-sixteenths 2 two and a half 四、符号与方程 a+b and (plus)b Xb es(multiplied by )b a/b a over(divided by )b a equals (is equal to)b a*b a is not (is not equal to)b proximately equals b a is greater than b as<b a is less than or equal to b x-0o x approaches infinity a=b a is equivalent to a is proportional to b a b a to b 90° 90c ninety degrees Centigrate 90F ninety degrees Fahrenheit x2 X y cube (cubed) to the minus tenth v4 the square root of four Va. the cube root of a Va the fifth root of a square