艾宾浩斯保留曲线

curve of pursuit curve retention quota of export earnings retention kurtosis of frequency curve uniformization of analytic curve origin of transition curve overlapping of frequency curve class of a curve slope of curve isometric family of curve graduation of curve spring of curve Ebbinghaus curve curve of retention retention curve moisture retention curve retention of pregnancy products retention of goods retention cyst of cervix Bladder retention of urine retention capacity of soil retention of phlegmatic dampness retention of records