1. On this base, the carrier of the rare-earth metal and oxidized lead is sleeted according to chinds special characteristic and exhaust purifying box in multi-use experiment was designed.
在此基础上，结合我国国情选用了稀土催化剂、氧化铝载体，设计了复合式试验用尾气净化消声器。
2. 3 Groups of subjects were sleeted by strict clinical screening. The first group included 6 Alzheimers diseasepatients, the second included 7 mild cognitive impairmentpatients and the third group included 7 healthy controls.
临床严格筛选出3组受试者，第一组为阿尔茨海默病患者组(6例)，第二组轻度认知功能障碍患者组(7例)，第三组为健康对照组(6例)。