the class of thermal components with two inlets
(Forall (?Self ?Time) (<=> (Active ?Time 2-Input-Thermal-Component ?Self) (And (2-Input-Thermal-Component ?Self) (Active ?Time Thermal-Component ?Self))))
(Forall (?Self ?Time) (<=> (Active ?Time 2-Input-Thermal-Component ?Self) (And (2-Input-Thermal-Component ?Self) (Active ?Time Thermal-Component ?Self)))) (Attribute-Function-Of Component-Inlet1 2-Input-Thermal-Component) (Attribute-Function-Of Component-Inlet2 2-Input-Thermal-Component) (Forall (?Self ?Time) (<=> (Active ?Time 3-Input-Thermal-Component ?Self) (And (3-Input-Thermal-Component ?Self) (Active ?Time 2-Input-Thermal-Component ?Self)))) (Forall (?Self ?Time) (<=> (Active ?Time 2-1-Port-Thermal-Component ?Self) (And (2-1-Port-Thermal-Component ?Self) (Active ?Time 2-Input-Thermal-Component ?Self) (Active ?Time 1-Output-Thermal-Component ?Self)))) (Forall (?Self ?Time) (<=> (Active ?Time 2-2-Port-Thermal-Component ?Self) (And (2-2-Port-Thermal-Component ?Self) (Active ?Time 2-Input-Thermal-Component ?Self) (Active ?Time 2-Output-Thermal-Component ?Self))))