seam top
英
美
- 煤层的顶板
相关词汇
seamy
seam
seam-free nylon stockings
seam with potential outburst
seams with a closed distance
seam permeability coefficient
Seamen' s qualification exams
seam roof and floor fracturing
seam automatic tracking system
seam with shallow mining depth
seam with low depth overburden
seam roadways bolt-mesh-anchor
大家正在查
Copyright © 2023 256查询网 All Rights Reserved
