中粘度: 水泵和油泵 、 仪表的检查孔盖、气缸盖 、 油底壳和几乎所有的机加工表面. Medium grade: water and oil pumps, instrument inspection covers , cylinder heads, sumps and most machined surfaces.
One discovers his ignorance only through learning.学然后知不足.He now discovers that they have been going south instead of north.他这时才明白过来,原来他们一直向南而不是向北航行.Finishing their shopping at the mall, a couple discovers.一对夫妇在一家大卖场里买完东西...
约30%的肠球菌高耐庆大霉素.Approximately 30 % of Enterococcus exhibited high - level gentamicin resistance.〔结论〕卡那霉素ELB培养基是一种简便、有效的分离肠道肠球菌的选择培养基.Conclusion 〕 kanamycin ELB is a convenient and effective selective medium to isolate ent...