【求助】7890A

Please refer to below pages:
http://www.chem.agilent.com/Scripts/Generic.ASP?lPage=42991&indcol=N&prodcol=Y
http://www.chem.agilent.com/Scripts/PDSLocal.asp?lPage=54223&LL=Y&CountryCode=CN
http://www.chem.agilent.com/Scripts/PDSLocal.asp?lPage=7080&LL=Y&CountryCode=CN