The first activity is granodiorite magmatism, enabling metallogenic elements re-movement and concentration not only in magmatic fluid but also in strata, because the meteoric water in strata participated fluid convective circulation by the heat force provi.

In the process of transforming it to compressed air agitation,in order to make full use of prototype of pond and equipment,and save transformation fund,it is suggested to prefer convective circulation to agitation with full pond of boiling air.

The transient dynamic stress analysis by cyclic symmetry method was presented in this paper.

In the process of the hydraulic anchor anchoring,Be involved with the mutual contact of steel sheet which is cyclic symmetry structures and the steel sheet teeth mesh with the rock.

The empiric formula is proved under alternatins compound stress based on an experimental curve of synchronous symmetry cycle, and safety level of GOUGH formuia is investigated in the extended application.

Selection and application of performance test standards for large size gas and steam combined cycle units;

Acceptance test of 9FA combined cycle unit and suggestions on plant operation;

Technical features of Siemens HE type combined cycle steam turbine;