Guidelines for the installation of coal pillars and coal mining in buildings. water bodies. railways and main shafts (Second Edition) Metallurgy. Geology(Chinese Edition) - Softcover
Inhaltsangabe
Language:Chinese.paperback.Pub Date:2024-12.publisher:Emergency Management Press.description:Paperback.Pub Date:2024-12 Pages:252 Publisher:Emergency Management Press This book describes in detail the calculation of surface movement deformation and its parameter obtaining methods in the field of three down coal mining. the calculation method
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