等容舒张期时间常数
Time constant of ventricular isovolumic relaxation
舒张期/收缩期时限比
diastolic and systolic duration ratio
舒张期左心室内径宽
left ventricular internal diameter in diastole LVI
心室等容舒张期时间常数
Time constant of ventricular isovolumic relaxation
古生代中期－中生代早期
middle paleozoic early mesozoic