Prokaryotes lack organelles such as nucleoli, mitochondria, plastids , Golgi apparatus, and do not exhibit cyclosis.原核生物无细胞器,如核仁 、 线粒体 、 质体 、 高尔基体等, 不出现胞质环流....
噬菌体已复制和给体细胞已发生裂解.The phage has replicated and the donor cells have lysed.溶源性是噬菌体和寄生染色体之间的半永久联合.Lysogeny is a semi - permanent association between the phage and host chromosomes.有人提出把噬菌体分为六类.It has been proposed to group ...
The pop singer is the idol of young people.这位流行歌手成为年轻人崇拜的偶像.The pop singer was mobbed by teenagers.那个流行歌曲歌手被少年男女包围了.The pop singer turned to figure in soap operas.那位流行歌星转向屏幕,在肥皂剧中扮演角色....
Seeing the children playing ping - pong , he itched to have a go.他看到孩子们打 乒乓, 不觉技痒.He is a veteran in playing ping - pong.他是位乒乓老将.Football, swimming and ping - pong are popular sports.足球 、 游泳和乒乓球是大家喜爱的运动....
Each treatment was fed one of four experimental diets containing 0、1 % 、2 % 、3 % EMM.肉仔鸡日粮中,添加1%、2%EMM,与常规的玉米-豆粕型日粮相比,不仅不影响采食量、增重及料肉比等生产性能,而且可以降低饲料成本,增加经济效益.Methods : The clinical feature, diagnosis and treatment of 19 c...