density log密度测井densityn.密度；浓度；比重Density of alveolaf bone牙槽骨骨密度density-based distance基于密度的距离density damage increment密度损伤增量Density functinal theory密度泛函计算density of ion beam flux离子束流密度density management table密度管理表density funtional theory密度泛函density of nuclear force核兵力密度density of spectral line谱线黑度density dominant species密度优势种