First slide
츲ǻ簡 å 2,618  
츲ǻ Ȩ > 츲 å > ۰Ұ
ſ
ֿ
1, 2
۰Ұ

1942 £ ¾ б, ϰ, ĵڽ ָб ߴ. 1970 繫ҿ Ͽ, [ſ켳繫] [// 繫] . ̱డȸ ȸ, ̱ డȸ ȸ Ȱ ̸, ȸ̴.
ΰ̿ ŷǾ õ ڷḦ а , 1998 < >( ) ̾, < 1,2> ߴ.