the control volume with two output streams
(Forall (?Self ?Time) (<=> (Active ?Time 2-Output-Control-Volume ?Self) (And (2-Output-Control-Volume ?Self) (Active ?Time Control-Volume ?Self))))
(Forall (?Self ?Time) (<=> (Active ?Time 2-Output-Control-Volume ?Self) (And (2-Output-Control-Volume ?Self) (Active ?Time Control-Volume ?Self)))) (Attribute-Function-Of Outlet-Stream1 2-Output-Control-Volume) (Attribute-Function-Of Outlet-Stream2 2-Output-Control-Volume) (Forall (?Self ?Time) (<=> (Active ?Time 1-2-Control-Volume ?Self) (And (1-2-Control-Volume ?Self) (Active ?Time 1-Input-Control-Volume ?Self) (Active ?Time 2-Output-Control-Volume ?Self)))) (Forall (?Self ?Time) (<=> (Active ?Time 2-2-Control-Volume ?Self) (And (2-2-Control-Volume ?Self) (Active ?Time 2-Input-Control-Volume ?Self) (Active ?Time 2-Output-Control-Volume ?Self))))