Liu Zhiqiang

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Comprehensive water quality identification index, based on single factor water quality identification index, is a new tool for evaluating surface water quality. This evaluation method of water quality can fully depict the general water quality and evaluate water quality qualitatively and quantitatively. We use this method to evaluate the water quality of(More)
The dynamic response of rotating blade with pre-twisted angle and variable cross section in non-inertia coordinate system is presented in this paper. Based on Lagrange equation, the dynamic equations of rotating blade with pre-twisted angle and variable cross section are derived and discretized using finite element method. The numerical simulation results(More)
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