結(jié)果根據(jù)動(dòng)態(tài)基線的報(bào)警線控制圖法,未發(fā)現(xiàn)畸形E的發(fā)生有增加.Results The incidence of birth defect E had no increase compared with former three years.提出了可變抽樣區(qū)間的帶警戒限均值控制圖.One - side mean control charts with warning limits under variable sampling interv...