表达式5: negative 2 "a" "b" left parenthesis, StartRoot, left parenthesis, "x" plus "d" , right parenthesis , EndRoot plus "b" , right parenthesis "a" "e" Superscript, negative StartFraction, StartRoot, "d" plus "x" , EndRoot Over "b" , EndFraction , Baseline 有图表。 要进行音频跟踪，按“Alt 键 + T”。−2abx+d+bae−d+xb
5
表达式6: "l" equals 220000l=220000
00
600000600000
6
表达式7: left parenthesis, negative 2 "a" "b" left parenthesis, StartRoot, left parenthesis, "n" plus "d" , right parenthesis , EndRoot plus "b" , right parenthesis "a" "e" Superscript, negative StartFraction, StartRoot, "d" plus "n" , EndRoot Over "b" , EndFraction , Baseline , right parenthesis minus left parenthesis, negative 2 "a" "b" left parenthesis, StartRoot, left parenthesis, "l" plus "d" , right parenthesis , EndRoot plus "b" , right parenthesis "a" "e" Superscript, negative StartFraction, StartRoot, "d" plus "l" , EndRoot Over "b" , EndFraction , Baseline , right parenthesis 有图表。 要进行音频跟踪，按“Alt 键 + T”。−2abn+d+bae−d+nb−−2abl+d+bae−d+lb
