← Ишга қайтиш
Ушбу ишга иқтибос қилган ишлар
4 та иш
Иш: A study on the reasonable width of narrow coal pillars in the section of hard primary roof hewing along the air excavation roadway
Маҳсулотлар
Ишлаб чиқувчилар учун
AkademBaseЭкотизим учун очиқ API4 та иш
Иш: A study on the reasonable width of narrow coal pillars in the section of hard primary roof hewing along the air excavation roadway