The second part is MODEL COURSE for training ship security officers which is my own production.

第二篇是船舶保安员示范课程设计，是我个人的主要研究成果。

youdao

The second part is MODEL COURSE for training ship security officers which is my own production.

第二篇是船舶保安员示范课程设计，是我个人的主要研究成果。

youdao