Mass is one of the most fundamental properties that can be obtained about an atomic nucleus.Generally,more accurate and precise mass data can study more fundamental physical problems.A mass resolution of ~10-7 is needed for the studies of such as testing mass formulas Mass is one of the most fundamental properties that can be obtained about an atomic nucleus. Generally, more accurate and precise mass data can study more fundamental physical problems. A mass resolution of ~ 10-7 is needed for the studies of such testing mass formulas