新GRE数学满分须知—常见符号：
= is equal to
≠ is not equal to
≈ is approximately equal to
> is greater than
≥ is greater than or equal to
< is less than
≤ is less than or equal to
根号 square root
0.888888… the repeating decimal
r s't" r degrees s minutes t seconds
∠ angle
∟ right angle
┻ is perpendicular
│x│ absolute value of x
∥ is parallel to
△ triangle
～ is similar to
≌ is congruent to
△x delta x
π pi(3.1415…)
1. is equal to; is the same as
the result is; yields; gives =
2. the sum of x and y; the total of x and y;
x added to y; x increased by y; x+y
x more then y; x greater than y
3. x minus y; x less y;
the difference of x and y; x take away y;
from x subtract y' x decreased by y; x-y
x diminished by y; y is subtracted from x;
y less than x (note the reversal)
4. x multiplied by y;
the product of x and y; xy
5. divided by y;
the quotient of x and y; x y,
y divided into x (note the reversal)
6. A and B are factors of C;
A and B are divisors of C;
C is divisible by A and by B; A B=C
C is a multiple of A and of B;
A divides C and B divides C;
7. the ratio of a to b a:b,
8. reciprocal of x 1/x
9. x times as many z as y; z=x y
10.a squared;
a to the second power a2
11. a cubed; a3
a to the third power
12. between a and b (a,b)
between a and b, inclusive [a,b]
13. off 低于，从……中扣除
14. account for 占
15. one third 1/3
16. a of x (a fraction of x); ax
75% of x (a percent of x) 0.75x
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