PDF(299 KB)
PDF(299 KB)
PDF(299 KB)
松动与定向结合开挖干扰石方
COMBINED LOOSENING BLASTING WITH ORIENTED BLAST?ING TO EXCAVATE INTERFERENTIAL STONEWORKS
| {{custom_ref.label}} |
{{custom_citation.content}}
{{custom_citation.annotation}}
|
/
| 〈 |
|
〉 |