论述了新的装药结构-底部空气垫层装药结构的特点和爆破原理。

A new loading structure-bottom air cushion loading is described together with its specialities and blasting principle.

youdao

论述了新的装药结构-底部空气垫层装药结构的特点和爆破原理。

A new loading structure-bottom air cushion loading is described together with its specialities and blasting principle.

youdao