In other cases, such as inventories, inputs and outputs are both continuous.在另一些情况下, 比如存货, 其投入和产出都是持续不断的.In the real world, the relation between inputsand outputs exhibits wide variety.在现实世界中, 投入产出间关系表现出多种变化.Care must be...
Testing VD pathogen through PCR may efficaciously prevent, cure and control VD.利用PCR技术检测性病病原体,可有效的预防, 治疗和控制性病.The results indicate that ozone can degrade AFB _ 1 in cereal efficaciously.结果显示:臭氧能够有效的降解谷物中的AFB_1.But we sho...