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Material WC-12Co has good characters of wear-resisting, anticorrosion and high temperature resisting. High performance material can be made by surface technology that adds WC-12Co on the surface of common material. With the flame spraying and laser cladding technique, the surface of 45# steel is covered firstly with a layer of WC-12Co cermets powder, and(More)
—E-learning platform evaluation is one of the most important issues in E-learning platform management. It is a multi-criteria decision problem including various factors. Traditional methods have many shortcomings. Fuzzy AHP model is established to solve this problem. A general evaluation method is provided and steps are presented. As a case study, the model(More)
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