SYMBOL MEANING = is equal to8 v4 Q1 {* j, {
≠ is not equal to+ t7 @) ?1 W- V4 g. \" e1 e( K
≈ is approximately equal to) I, _( J+ h# r6 C6 k0 ^" l5 i3 W
＞ is greater than9 w) S" c' O* k: P1 r' `5 o
≥ is greater than or equal to0 p( Q" _3 @6 d0 {6 ?/ A
＜ is less than' o0 x* T6 w) N4 G' E
≤ is less than or equal to
L' T7 j2 J" i! u4 m5 ] 根号 square root" Q* r" q* C3 \& V% l0 A
0.888888… the repeating decimal; A3 n1 z" S. ~# F) V: n2 W
r s't" r degrees s minutes t seconds
/ C9 e* E" c. z& F# H l' Q ∠angle
6 ]4 j# D) i9 a% ~3 \: X5 q3 w ∟ right angle& ^: C+ q0 B9 o+ r P _1 s: C! D0 @; y
┻ is perpendicular2 I6 ? R9 T7 |6 L& r
│x│ absolute value of x
( k- _0 M! Q3 q ∥ is parallel to
8 t) z: I1 X' r+ B. ~6 n5 c6 p △ triangle8 o8 \5 I9 B6 @8 P8 a
～ is similar to) W4 L) H4 W/ G2 C& |
≌ is congruent to
, h$ E+ t6 A% o. r △x delta x% x! g. |9 c& b2 q- ~1 ]/ J
π pi(3.1415…)
1 k" x" J. d( D8 t: ]: c0 c5 A 1. is equal to; is the same as! R& n2 t% g9 Z
the result is; yields; gives =
& b* X) B$ c6 Y 2. the sum of x and y; the total of x and y;
! F. U5 m, ]; [5 V6 F& ^( Y* r% n x added to y; x increased by y; x+y
! r/ P, O) e! @& k0 h# \( e x more then y; x greater than y1 ~/ g4 R) Q" V- \! s/ _
3. x minus y; x less y;
- F5 A* H' I0 `' M) @ E the difference of x and y; x take away y;
, a0 i1 m9 x- \5 c% U: \5 I from x subtract y' x decreased by y; x-y; a: _4 j Q4 h9 ^
x diminished by y; y is subtracted from x;
6 p( n- Y- G; {7 P3 C. E y less than x (note the reversal)
: d# ?7 |9 y% c* `2 M! u" g5 x 4.x multiplied by y;/ H+ K: u2 _/ r2 B
the product of x and y; xy
* d, o2 }" M" w7 F5 [' h2 M2 x" ] 5. divided by y; Q$ W' _ n0 a' H1 W
the quotient of x and y; x y,
) s" U: W$ V2 |; I y divided into x (note the reversal)8 E% j8 @( v( {7 p/ R, G; z+ g
6.A and B are factors of C;
8 i# I. ~& P$ H A and B are divisors of C;" f9 E/ H# \0 V- [
C is divisible by A and by B; A B=C
$ g- b% u6 P- E' { C is a multiple of A and of B;
- N* a. y/ _9 q% N/ [" d, h A divides C and B divides C;
+ }7 C, j7 l7 a7 L: x( b 7. the ratio of a to b a:b,
: p4 V) `3 y( v 8. reciprocal of x 1/x! V6 S5 T; C/ G: ?
9. x times as many z as y; z=x y
, g' ?& ^1 N4 |( \( D, q' y; v7 W 10.a squared;
$ J: G$ G2 x$ ]1 T: a a to the second power a2
; E; C/ l5 v% n- p) N 11. a cubed; a33 \5 i9 n6 ^# p
a to the third power
; W+ J3 ~1 q L1 L/ Y/ L G 12. between a and b (a,b), M$ J5 ?) R# {8 S6 O+ H3 ?6 X$ a
between a and b, inclusive [a,b]
' L& f) `9 L+ a* t0 X( m) D' k% O$ L, ?3 E
13. off 低于，从……中扣除 |
发表于 2012-8-15 12:55:17
楼主