improvern.改良者；改善者；改进剂improvevt.改善；改进；提高vi.变得更好；改进improved SECI model改进的SECI模型improved L-system改进L系统improved OGY method改进的OGY法improve and restore改善恢复improve on technics工艺改进improvemen tmeasure改进措施improve the results提高效益Improve PID Control改进型PID控制improved CASA model改进卡内基-埃姆斯-斯坦福方法（CASA）模型improve legislation完善立法