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With the renovation of the architectural design concept and the progress of architectural technology, the requirement of green environmental protection in architectural design and construction is increasing in our country. The article mainly explains the development of assembled green buildings in the construction of new countryside. It is hoped that it can provide a reference for relevant units and workers, and promote the development of assembled green building in the new countryside.

In order to improve the hydrodynamic performance of the vertical-axis variable-pitch current turbine, with analyzing on the existing design mentality of blade control mechanism, an optimized law of variable-pitch vertical-axis tidal current turbine was given in terms of the instantaneous moment coefficient of the blade. A method for solving the lift - drag coefficient of Blade by wind - hole test data is given. The optimized kinematic model has a significant reference value for the further development of vertical axis turbine model test.

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