表达式12: left parenthesis, "d" cos "t" , "d" sin "t" , right parenthesisdcost,dsint
00
定义域t最小值：
less than or equal to "t" less than or equal to≤t≤
定义域t最大值： 360360
12
表达式13: left parenthesis, "W" "t" , "H" minus "H" "t" , right parenthesisWt,H−Ht
00
定义域t最小值：
less than or equal to "t" less than or equal to≤t≤
11
定义域t最大值：
13
表达式14: polygon left parenthesis, left parenthesis, 0 , 0 , right parenthesis , left parenthesis, 0 , "H" , right parenthesis , left parenthesis, "W" , "H" , right parenthesis , left parenthesis, "W" , 0 , right parenthesis , right parenthesispolygon0,0,0,H,W,H,W,0
14
隐藏 标签 left parenthesis, 0 , 0 , right parenthesis , left parenthesis, 0 , "H" , right parenthesis , left parenthesis, "W" , "H" , right parenthesis , left parenthesis, "W" , 0 , right parenthesis0,0,0,H,W,H,W,0
标签
equals=
left parenthesis, 0 , 0 , right parenthesis0,0
left parenthesis, 0 , 10 , right parenthesis0,10
left parenthesis, 19.6 , 10 , right parenthesis19.6,10
left parenthesis, 19.6 , 0 , right parenthesis19.6,0
