plain sequence
3.After modification, main technologica and economic indexes have been improved and sequence casting has been realized, finished products of plain carbon and low-alloy grades through secondary annealing eliminated and billet hot delivery and charging primarily realized, which develops the modification of slab CCM at Xinyu Iron &Steel Co.Ltd.
4.On the basis of the field regional geological surveys and through studies of the lithology, sedimentary structures, paleocurrent direction, vertical sequence and three dimensional shape and association of sedimentary units and grain size analysis and scanning electron microscope analysis, the delta facies, delta plain facies, fluvial facies, lacustrine facies, alluvial facies and eolian sand dunes are distinguished in Tertiary strata of the Lanzhou Minhe basin.
