背面投射幕后投影幕后影像backprojected point spread function: 反向投影點展寬函數(shù),反向投影點擴展函數(shù)backpricing: 有效時間定價backprojection: 反向投射backpressureturbine: 背壓透平backprojection algorithm: 向后投射算法下載手機詞典可隨時隨地查詞查翻譯