The precise leveling and centering technology of survey instrument;

The paper introduces the bed leveling technique with underwater rail suspended on barge and positioned by GPS in deep water channel regulation works at estuary of Yangtze River.

This paper introduces the basic structure,system composition,applicable condition,main parameters and construction procedure of the first walking underwater bed leveling machine in China,and describes the construction quality and efficiency of bed leveling in Yangtze Estuary Deepwater Channel Regulation Project.

The paper introduces the design idea and process of the first levelling ship in China A brief introduction is given to the components of levelling ship and process of rubble filling and levelling An exposition to the actural construction quality and efficiency of rubble filling and levelling of foundation bed in the Yangtze Estuary deepwater channel regulation project is give

Anode sub-layer in membrane electrode assembly of DMFC;

The concept and practice of the adjusting platform for storehouse in the finished paper inventory management system;

Preparation of high molecular water soluble hot air leveling flux and its evaluting;