Vendeur : liu xing, Nanjing, JS, Chine
EUR 34,17
Autre deviseQuantité disponible : 1 disponible(s)
Ajouter au panierpaperback. Etat : Good. Paperback. Pub Date :1986-12-01 Pages: 81 Publisher: Hebei Children's Publishing naturally Old Hall book bags (only several libraries India Chapter). Slight the nails rust (affect). The back cover is creased.
ISBN 10 : 7502077324 ISBN 13 : 9787502077327
Vendeur : liu xing, Nanjing, JS, Chine
EUR 91,82
Autre deviseQuantité disponible : 3 disponible(s)
Ajouter au panierpaperback. Etat : New. Paperback. Pub Date: 2020-05-01 Pages: 278 Language: Chinese Publisher: Emergency Management Press Theories and Methods of Underground Trough Wave Seismic Detection in Coal Mines is about the basic theory of trough waves. wave field propagation characteristics. data processing methods. and detection Examples and books on the theory of trough waves in complex media.?Channel waves are guided waves propagating in thin coal seams. They are a kind of seismic waves. They are used to detect structur.