Compared to supersequence boundaries, the depositional hiatus at sequence boundaries is shorter and sequence boundaries are not compatible with lithostratigraphic unit boundaries.
Besides,the quantity in the certificates must totally according to the transmitted sheet,inconsistent status will be analysed with the hindward reports and described the disposal ways.
The drawing method for the double channel impeller is studied.It is found that there is an in-conformity between the dimensions of plane-view and pinacoid-view of fluid cross-section.