tf–idf, short for term frequency–inverse document frequency, is a numerical statistic that is intended to reflect how important a word is to a document in a collection or corpus.[1]:8 It is often used as a weighting factor in information retrieval an

c#实现了显示格式、隐式格式、CN格式数值模拟求解流体冷却一维板材。-c# to achieve the display format, implicit scheme, CN format numerical simulation to solve a one-dimensional fluid-cooled plate.