短語詞組短語free active vocabulary level 自由主動詞滙量Active Start Level 啓動級別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 有傚話音電平population of active level 激發(fā)態(tài)佈居數(shù)active level concentration 作用濃度 返回 active level