shaft lining
短语词组
- shaft t lining 井筒支架
- mine shaft -lining 井筒涌水
- shaft -lining 立井井筒
- propeller shaft lining 尾轴衬套;尾轴衬层
- shaft lining thickness design 井壁厚度设计
- shaft lining fracture 井壁破裂
- vertical shaft lining 立井井壁
- drilling shaft lining structure 钻井井壁结构
- shaft lining deformation 井壁应变 返回 shaft lining