Improved MS改良MSimprovevt.改善；改进；提高vi.变得更好；改进Improved Computer Sighting System改进型计算机观测系统improved Prim heuristic algorithm改进的普里姆启发式算法improve the people' s livelihoods耶里尼improved hidden Markov tree model改进隐马尔可夫树模型Improved particle swarm algorithm改进粒子群算法Improved Copy Smooth Skin Weights改进的拷贝柔性蒙皮权重improved position locator circuit改进的定位器电路improved composite element method改进复合单元法Improved Conventional Mine System常规雷改进系统(美国)Improved Remote-Area Armor Mine经改进的边远区防坦克地

1. The combination of improved seeds, more fertilizer, and improved irrigation doubled yields on irrigated land in developing countries.
   由于改良种子，增加化肥和改进灌溉系统的共同作用，发展中国家得到灌溉的农田产量增加了一倍。