;ͼԶƷб
;ʽ Ʒ ͼ X:Y ּ:Χ:ʱ:ָ
;: ʡ330:330Χ10ڵÿ2пܳһͽָּ50%
;ּ˵: 100öپǶٷ֮һĳ,10001/1000. 100100=100% ÿһСһ.5050%
;: ͽָ 3 330:330 50:10:2:1