表达式6: "B" Subscript, "y" , Baseline equals left parenthesis, "R" plus "s" cos left parenthesis, StartFraction, "u" Over 2 , EndFraction , right parenthesis , right parenthesis sine left parenthesis, StartFraction, "u" Over 3 , EndFraction , right parenthesisBy=R+scosu2sinu3
添加滑块：
6
表达式7: "B" Subscript, "z" , Baseline equals "s" plus sine left parenthesis, StartFraction, "u" Over 2 , EndFraction , right parenthesisBz=s+sinu2
添加滑块：
7
表达式8: "X" equals "B" Subscript, "x" , Baseline plus "s" cosine left parenthesis, StartFraction, "u" Over 3 , EndFraction , right parenthesis cosine left parenthesis, "v" minus pi , right parenthesisX=Bx+scosu3cosv−π
添加滑块：
8
表达式9: "Y" equals "B" Subscript, "y" , Baseline plus "s" sine left parenthesis, StartFraction, "u" Over 3 , EndFraction , right parenthesis cosine left parenthesis, "v" minus pi , right parenthesisY=By+ssinu3cosv−π
添加滑块：
9
表达式10: "Z" equals "B" Subscript, "z" , Baseline plus "s" sine left parenthesis, "v" minus pi , right parenthesisZ=Bz+ssinv−π
