By virtue of studying the properties and the application of the expected discounted penalty function at ruin, this dissertation is devoted to achieving three aspects of work as follows:1. In the classical risk model, Hans U. Gerber and Elias S. W.是什么意思_By virtue of studying the properties and the application of the expected discounted penalty function at ruin, this dissertation is devoted to achieving three aspects of work as follows:1. In the classical risk model, Hans U. Gerber and Elias S. W.在线翻译_英语_读音_用法_例句