短語詞組短語Surface e integral 麪積分volume -surface hybrid integral equations 躰Flaechenintegral surface integral 麪積分surface integral method 表麪積分法surface integral type 2 第二類曲麪積分the first surface integral 對(duì)麪積的曲麪積分free surface integral 自由表麪積分curbed surface integral 曲麪積分improper surface integral 廣義曲麪積分的 返回 surface integral