单词	validity of data
释义	validity of data 数据的有效性
随便看	effective date/time of change effective date transfer rate effective day effective days effective day temperature effective deadline scheduling effective dead-line scheduling effective dead time effective debt effective decay constant effective deceleration effective deck area effective decline rate effective decontamination factor effective defense of check effective deficiency effective deformability effective deformation effective degree effective degree of freedom effective degrees of freedom effective delayed neutron fraction effective delay of signal Effective Delivery Length effective delivery stroke