Open AccessFM-CW electromagnetic technique of measuring coal layer thickness
Author(s) -
D.A. Ellerbruch,
Donald R Belsher
Publication year - 1976
Language(s) - Uncategorized
Resource type - Reports
DOI - 10.6028/nbs.ir.76-840
Subject(s) - coal , materials science , layer (electronics) , optics , acoustics , composite material , physics , engineering , waste management