theory head理论扬程theoryn.学说；理论；原理；意见theory of philosophy哲学原理theory of compaction压制理论theory of pangenesis泛生说theory of loose ring松动圈理论theory of scattering散射理论theory of dependency[经] 依赖论, 从属论theory of plasticity塑性理论Theory of Dependence依附理论Theory group ecology群体生态学Theory of Experience经验论