积分方程 jīfēnfāngchéng integral equation Definitions Defs Origin Strokes Stroke Words Sentences Sents 积分方程 積分方程 jīfēnfāngchéng integral equation an equation in which an unknown function appears under an integral sign
积分方程 積分方程 jīfēnfāngchéng integral equation an equation in which an unknown function appears under an integral sign
