As indigenous oral bacteria, the Actinomyces are thought to contribute to caries especially to root caries.放线菌是口腔固有菌群中的主要菌属,与龋病尤其是根龋的发生、发展有密切关系.Firstly, a strain secreting blue pigments was separated from soil that was i...
Our host was Mr. Zhou Xiang, who is head of the numismatic department of the museum .接待我们的是周祥先生，周先生是博物馆钱币部门的负责人。I support the objectives of The China Association of Numismatic and wish to become a member.我自愿加入中国民俗钱币学会,遵守...
Works dependably , sincere, can withstand the tremendous pressure, has esprit de corps.做事塌实 、 诚恳 、 能承受大的压力, 具有团结精神.The medical corps were cited for bravery in combat.医疗队由于在战场上的英勇表现而受嘉奖.The press corps was primed to leap ...