词汇	closing system
释义	closing system 封闭体系
随便看	principle of democracy principle of democratic centralism principle of depending choice Principle of Depesage principle of design principle of designation principle of destroying principle of detailed balance principle of de-tailed balance principle of detailed balancing principle of detection principle of determination principle of determinism principle of development principle of difference principle of differentiation principle of digital differential rectification principle of digital TV principle of dimensional homogeneity principle of dimensional invariance principle of dimensionality principle of diminishing productivity principle of diminishing prod-uctivity principle of direct effect principle of directional duality