Significant economic losses can be associated with ALV - J infection.重大经济损失可以同ALV -J 传染联系在一起.Develop practical methodologies for diagnosis of ALV - J related field problems in broiler flocks.开发ALV -J 相关领域问题诊断的实用方法学在烤焙用具群...
The maximum quantity of cotton jerseys this year is about DM 25,000.平方米的羊毛地毯超过了以往的订货.There were no difference in Ccr between DM and DM + C groups.DM+C 和DM两组Ccr无 显著差别.The DM membrane possesses fairly good selectivity, che...