While applying basketball three officials system, we should pay attention to the decision measurement accordance, strictly observe area division and seize the turning opportunity.

Analyzing some conventional ways to construct data warehouse, a new time rotation model that can be used to construct data warehouse is developed.

The cavitation-resistance puddle welding technique for turbine runner treatment and its benefit analysis;

Aimed at a capacity-enlarging remodeling of the turbine runner of hydropower station in Xinjiang and based on the application of 3-D turbulent flow computation with k-ε model, the governing equations of turbulent flow in body -fitted coordinate systems for Francis turbine runner are presented.

The turbine runner of Bailong hydropower station was damaged in the fifth year of production,which caused the excessive amplitude of vibration and served no good for effective production.

Computer simulation of turbulent flow through a Francis hydraulic turbine runner;

TBM-6 type blade shape measure Instrument for hydraulic turbine runner and its application were introduced in this paper.

The necessity and feasibility of redesign of hydraulic turbine runners in middle small sized hydropower stations are analyzed.

Based on the compare of various traditional procedures,and with theory research and practice,the article put for wad a viewpoint and a procedure that the crack fixing of hydraulic turbine can be done without heat treat-ment in ex amine and repair of hydraulic plant.