SYMBOL MEANING = is equal to& r: h( |: s) V* `+ W
≠ is not equal to
2 m i+ N8 c( p$ I7 H) b0 ]! ~ ≈ is approximately equal to: N& a; B6 U2 [# X7 ?5 r+ s
＞ is greater than1 S: {; P+ d7 X9 ]2 k* ^5 x
≥ is greater than or equal to
$ h4 p, G2 K0 |% [& q ＜ is less than
0 G8 J0 k+ o: e$ T& F! t ≤ is less than or equal to
0 a4 c! J( ^. S 根号 square root
5 F- U& Z4 p5 |2 E1 x$ r3 E- g' S 0.888888… the repeating decimal/ O. B7 K0 g4 ~" c% Y3 R
r s't" r degrees s minutes t seconds
* k- s4 Q" {1 J; N4 r ∠angle
5 K0 O3 F( F V# T0 ~: I/ q ∟ right angle
0 G' O$ @8 Y# w* S2 C ┻ is perpendicular
7 J+ S N& X) e2 d │x│ absolute value of x
# u2 k6 P2 F2 u2 s y3 p ∥ is parallel to
% V8 B; X/ m; W& D: g* o △ triangle
9 M& Z( e: t4 ]9 {3 T- F R ～ is similar to
5 i0 n+ U% B8 f# q+ | ≌ is congruent to6 B7 \# _$ h X- E Z. T
△x delta x. ?/ l+ X/ U7 s
π pi(3.1415…)" n' S) M$ P( r! N7 i
1. is equal to; is the same as0 K2 S7 |4 d( s! P
the result is; yields; gives =
3 h2 F7 |9 {2 @1 b 2. the sum of x and y; the total of x and y;
1 }: Q: y6 b z+ P x added to y; x increased by y; x+y
- Z7 c* O; {/ ~9 D9 n# j0 Z x more then y; x greater than y3 ]7 J, ]! P$ K$ _% J
3. x minus y; x less y;
/ K4 T9 a) |! ` the difference of x and y; x take away y;( d# L7 L. e+ g' F2 g- a; ^) |+ }
from x subtract y' x decreased by y; x-y
8 K3 w) j! p% ? x diminished by y; y is subtracted from x;9 E3 q* o9 z# O; g: m
y less than x (note the reversal). X4 Q" Z" c' ?9 m. a+ m* j
4.x multiplied by y;
2 c1 _6 A8 D# ~5 X! x6 | the product of x and y; xy
$ Y7 {. C ?9 W; p! P& u 5. divided by y;6 Q2 l K, B& \. f+ e9 }2 F9 a4 C, ]
the quotient of x and y; x y,# }" [ z1 C% `8 ?4 u( V o
y divided into x (note the reversal)
5 v% \2 `% c4 O U2 I7 N 6.A and B are factors of C;
# R7 |8 c* E5 b% c3 Q A and B are divisors of C;; ]9 \: N, [. r) @
C is divisible by A and by B; A B=C
b. Y! M S+ |2 e# {7 | C is a multiple of A and of B;: t& b3 t* A1 N) ^; O
A divides C and B divides C;
6 a& Y# D/ d, K- N7 y 7. the ratio of a to b a:b,$ d b2 V ^, _& ^( V& W5 I
8. reciprocal of x 1/x
8 P9 q- C/ U4 x+ C5 o) M$ Y- D3 Q 9. x times as many z as y; z=x y, _* G4 Y9 S3 a [9 M6 t- B) B: m
10.a squared;" @% w0 V* \- I
a to the second power a21 k. E2 s4 G/ _
11. a cubed; a3( b: u0 G; [9 L" ?3 r9 W! k9 D( m
a to the third power
: i1 S% @1 n& D7 e% Y" q 12. between a and b (a,b)
5 X5 ~' G" c! j between a and b, inclusive [a,b]7 ?7 I7 k, H4 q! K
9 k: [. g) k/ ]/ `' S% p& P
13. off 低于，从……中扣除 |
发表于 2012-8-15 12:55:17
楼主