theory frame理论框架theoryn.学说；理论；原理；意见theory of classical plates弹性薄板理论theory of external economy外部经济理论theory and policy relation理论与政策的关系theory of trace extinction痕迹消退理论Theory of Motor Winding FD电机绕组理论theory of multiple systems多重系统理论theory of the middle range中距理论theory of the divine right神权说theory of planned behavior计划行为理论theory of Light and Weight轻重