短語詞組短語free active vocabulary level 自由主動詞匯量Active Start Level 啟動級別active pit level 泥漿池液位Mean Active Speech Level 平均活動語音電平active e level 激活能級active speech level 有效話音電平population of active level 激發(fā)態(tài)布居數(shù)active level concentration 作用濃度 返回 active level