pf
abbr. 性能因素（Performance Factor）；气动浮筒（Pneumatic Float）；脉波频率（Pulse Frequency）；加压风机（Pressurization Fan）
例句
PF: We firstly focus on consistency and lean-ness.
PF：一致性和轻便性是我们的首要关注点。
Pf : Probability that a piece of space junk will survive reentry.
Pf：指一块太空垃圾坠落到地球表面的概率。
PF: at the mo we are pirates, these data are stolen from youdao we don't have any agnostic API for data other than JDBC.
PF：目前，除了JDBC，我们还没有任何平台无关的数据api。
