requirement trace
1.It elicits business requirement, user requirement, functional requirement hierarchically, and there is a requirement trace chain in the tool.
2.The new APM bags can find applications in precision filtration, operations with non-foaming requirement, and trace oil removals.
3.This paper has studied the application of eluant online generated method, gradient elution and concentrated method to meet the requirement of accurate measurement of super trace chloride and sulfate in water quality of the nuclear power plant, under the condition of using the separate column which has high selection of hydroxide.
4., which was compared with the trace element nutritional requirement of NRC(1998) and verdict the excess or the deficiency of the trace element for the typical ration , The results indicate the typical ration for pigs lacks Zn,Cu and Fe to different entent and needs to be added with these trace elements, Mn is enough and needs not to be supplementedIn Exp.
