Online Open University
Sunday, 23 December 2012
Blasting Operation for Quarry
Blasting Operation
keywords:
blasting, cordtex, explosive primer, emulite 150
爆破作業
關鍵字:
爆破,cordtex,爆炸性的引物,emulite150
No comments:
Post a Comment
Newer Post
Older Post
Home
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment