1)neutrons yield per fission,每次裂变后的中子产额2)nu factor,每次裂变后的中子产额3)every,每次4)at a time,每次5)every time,每次6)one rainfall event,每次降雨7)yield per pass,每次收率8)each and every accident,每次事故9)ninety-nine times out of a hundred,几乎每次10)Per-use Cost,每次使用费
用法和例句
Studying the characters and factors of water and soil losses over different ground covers under one rainfall event;
