actor model造句

• In order to study the mechanism of concurrent object - oriented language , firstly , several models of object - oriented language are investigated in the thesis . and then two kinds of concurrent model , pi calculus and actor model , are expounded
  为了研究并发面向对象语言机制，本文首先讨论了几种面向对象语言模型，然后阐述了pi演算和actor模型两种并发模型。