theory usage理论运用theoryn.学说；理论；原理；意见theory of sequential development顺序发展理论theory of random energy analysis能量随机分析理论theory of accounting measurement会计计量理论theory of industry concentration集聚理论Theory of Market Share Liability市场份额责任说Theory of Inter-industry Trade产业内贸易理论theory of investment combination投资组合理论theory of imaginary displacement虚位移原理theory on political party system政党制度理论theory of residual socialization剩余社会化论