促进祖国的统一 promote the unification of China

促动系统 ergotropic system

商品促销管理系统 promotional merchandise management system

促进一个系统 promote a system

促进系统 promotion system

中国和平统一促进会 china council for the promotion of peaceful reunification

非酶促反应系统 no-enzymatic reaction system

黄体促素试验系统 Luteinizing hormone test system