Bt and Ecd
,
Parameters
:U_Bt=840,t_Bt=400,U_cd=470,t_cd=18600,O_Bt='CW',O_cd='CW'
,,
:U_Bt=840,t_Bt=400,U_cd=470,t_cd=18600,O_Bt='CW',O_cd='CW'
