薄煤层 meaning in Chinese
black ring
girdle
low coal seam
low-coal deposit
thin coal
thin seam
Examples
- Way of exhausting gas from low permeability thin seam
低透气性薄煤层瓦斯抽放方法 - Characteristics and development of thin seam shearers
薄煤层采煤机的技术特点及研制 - Mining thin coal bed with fully automated plow
应用全自动化刨煤机开采薄煤层 - Mg200 456 - wd electric haulage shearer for thin seams
型薄煤层电牵引采煤机 - Practice on high efficient mining technology in thin seam
较薄煤层高效开采技术的实践