Decontamination factor (df)
[化] 凈化指數(shù); 去污系數(shù); 凈化系數(shù)
?? 詞語組成解析
n. 凈化, 排除污染\\n[化] 凈化; 純化; 清除放射性污染
factor
['f?kt?]
n. 因素;<數(shù)>因子;代理人;
vt. 把…因素包括進去;[數(shù)學(xué)]分解…的因子，將…分解成因子;以代理商（或管家等）的身份行事，做代理商（或管家）;
vi. 做代理商（或管家）;
??? 情景例句
To get ahead you'll have to work long hours and take short vacations.
要想出人頭地，你必須多工作少休假。
Which one is the longest river in China?
中國哪條河流最長？
That's the trouble, vicar,' answered Bill.
“問題就在這里，牧師，”比爾回答說。