In the high-voltage electric network construction,the craft that uses dynamic parachute paying-off leading string to assist to complete overhead transmission line construction has effectively settled the "long-standing" problems of time limit for the project,shoots compensation difficulty and the great crossing construction.

Boring tool set-up erection technique of marine shaft pipe;

We researched more than one hundred cases of warehouse s structure and design procedure,including AS/RS,VNA,and APR with the object-based analysis method,concluded a common stratification structure model and wholly parametrized model of industrial rack,and put forward a stratification design method of "system design-structure design-model design-component design".