The static pressure distribution along the distribution headers and collection headers with two typical header connecting systems of type-Z and type-U were measured on the cold model test rig.

In terms of such requirements as galvanized Z type steel wire specification,galvanizing process and making of Z type steel wire and the laying of full locked wire rope,the production procedure is determined.

Numerical simulation of metal flow patternof Z-type steel in butterfly pass;

Alteration rule of Z-type steel thickness in butterfly pass;

The treatment of old thoracolumbar spinal fracture with anterior decompression and titanium rete supporting bone autograft and Z-Plate fixation system;