twofold dilution的用法和樣例：
例句
- Methods The MIC and MBC of LVLX were determined by the tube doubling dilution method, and the effectiveness of the drugs were assessed by half survival time of the mice.
方法採用二倍稀釋法測定最低抑菌濃度和最低殺菌濃度，以半數動物存活時間為指標比較藥物對實驗性結核病的療效。 - Inhibition effect of several dialkyl quaternary ammonium salts on aquatic pathogenic bacteria was tested by double dilution method in tubes.
用試管兩倍稀釋法比較了幾種雙烷基季銨鹽抑制水產動物病原菌生長的實驗。
