Double Angel
1.,,,, [] (1),,,,,,,,,,,,,,,,() (),,( ), (2),,,,,1978 ( 53 )2 (M6.2) 6 (M7.4) 1997 ( 9 )3 1
(M6.2)5(M6.3),,,, (3),,1990,,, (4),,,,,,,,,,,,, 2.,,,,,, [] (1) 2
,,,,, (2),,,,, (),,,,,,,,,, 10,,,,,,,,,,,,,,,,,,,, 3. 3
: :,,,,, :, 3,,,,,,, : ABC 3 :, 1)[ ] 5,,, 4.,,,() [] (1), ()() 4
,, (2),,,,,,,, (3), ABC3, (4),,,, 8 (: 8, 1-2, ),,,,,, (:,,),,,, 5., (1) :, 1 5
C,, C, 4 B, 2 B :, 1 B, :. (2) : 1 C, : 1 B, :. [] (1),,,,.,,,,,,,,,, 6.,,,,,,,, 6
1 () 2 () 7
3 () [] (1) 13 (2),,,,1995 1, (3),,, 1/2,,,, 8
(4),,,,,,,, 7.,,,,, [] (1),, 2,,,,,,, (2),,,,,,,,,,,,,, 1 (3),,,, 9
,`,,,,,, 1 [] 1) : 3 2 2) :() 61 3 10
()
()
()
. 10, 30 [],,,,10 30,( 6, 10 ),, 10 () (/,),,,,, [] :,,,,, () (),,,,,,,,,, 1
I. (),,,,,,,(),. 1.,, 2., (: 11 35 11 ) 3., 2,, 4.,,, 2,3,(:),.,. 1.,,,,, 2
,[XX],[XX ] 1.1, () 2. (: 1-2-1) (:) 2.1 3.,,(),,,,,,,,, 13.,, 6.(:), 10. 4.,,,()(S)(SR) 5.,,,,?,( :3?) 6. 1,,,, W, D 3
,, (),,,, X..,A(1.),B(2.),, C(3.),, AB,[ ],,, [] [1.,],[()],,(), 4.(),[()],,,[2,][3,] [](),(X Y ),, C,, C,, (), 4
[2,] () 1,, 1 ( 2mm), ( 2mm),,,,,.,. (1)( 5): 1-2mm, ()(),(),,,,,,, 5
(a)x 2mm (b),, 6
(c)(),(), 5 (2)( 6):,, 2mm,,,,,(),,, 7
(a),, (b), 6 8
(c),( ) 6 (3)( 7):,,,, 9
(a),, (b),, 7 10
(c),, 7 8 (a),(b),,,,,,,,,, 8 (a)(b),,,,,, 11
(a) (b) 12
(1),,, (2).,,,,,,, B,,,,,,,,,, ()B (0.2m~0.1m) 0.2 m 1.0 m, ()B (1/60~1/30) 1/60 1/30 1
1,,,,,.,.,,. 1 1~2, 1/60 1/30 1 3.5 m, 6~12 cm. 2 ( 2), 1 m ( 3),,,,,, 4(a)~(b),,,1, 2
2 2 3 1 3
(a)1 (b)1 4
(c) (d) 4 5
,,,, 45cm : "",50%,,, (),,45cm ;,45cm ;, / ()B(1%~10%)1% 10% / ()B(10%~20%) 10% 20% 1)2). 6
2) 2 6 : 1) B 2) C 1) A 2) C 1) A 2) B 3.,,,, A,,,, B,,,, ( )., A : B :,,,, C :,,,,,,,,,,,,,,,,,,,,,,,, 7
(),,, -,( ), 9 C,[2, ][3 ], A A 1.() A B 2.() A C 3.() B B 2. () B C 3. () C C 3. () 8
,,( ) : --! 1 --!,--! --!,,,,,, 9