theory usage理论运用theoryn.学说；理论；原理；意见theory of demand-pull inflation需求拉动通货膨胀论theory of fiction juristic person法人拟制说theory of documentary information文献信息学theory of McDougall colour vision麦道加耳色觉学说theory of multiphase porous media多相孔隙介质理论theory of integral representation积分表示论theory of Yi nationality medicine彝族医学理论Theory of Socialist Contradiction社会主义矛盾学说theory of rectilinear congruences线汇论theory of state self-limitation国家自限说