ppo的读音 ppo中文意思

读音 
abbr. prior permission only 仅限于事前许可
ppo 用法和例句
He convinced me that ppo was going to the next great thing .
他告诉我ppo将是下一个伟大的发明。
Fox , like most inventors , was already on the next project , becoming champion for a new thermoplastic called ppo ( polyphenylene oxide ) .
福克斯,就像大多数的发明者一样,已经开始了下一个新项目的新耐热塑料ppo(聚亚苯基氧化物)的研发。