He niu zai (1 resultados)

paperback. Condición: New. Paperback. Pub Date: 2010 Pages: 138 in Publisher: China Petroleum University Press for the actual application of the scene. for the convenience of our engineering and technical personnel to understand and are familiar with the working principles and performance characteristics of the downhole tools. engaged in oil field development technology personnel popularity of downhole tools expertise to supplement and broaden. and to provide some reference to the vast number of technical staff. easy a.…