theory class理论课theoryn.学说；理论；原理；意见theory of preventive treatment治未病theory of ecological symbiosis共生理论theory of consolidation degree固结度理论theory combining with practice理论与实践结合theory of structural inflation结构性通货膨胀论theory of blending inheritance融合遗传学说theory of materialist practice唯物实践论Theory of state-intervention国家干预法说theory of deep well dewatering深井降水理论theory of class conglomeration阶级凝聚论