This paper is a supplement to that one entitled "Closed Loading System of the Leight Oil and Its Operation-on-Trial".

本文系对“轻油的密闭装车与试用”一文的补充。

youdao

This paper is a supplement to that one entitled "Closed Loading System of the Leight Oil and Its Operation-on-Trial".

本文系对“轻油的密闭装车与试用”一文的补充。

youdao