rectangular CFT矩形钢管混凝土rectangularadj.矩形的；长方形的；直角的rectangular flexible waveguide矩形软波导Rectangular Cross Section Gate矩形浇口rectangular descriptor systems矩形广义系统rectangular coordinate display直角坐标显示器rectangular association scheme矩阵相连法rectangular miniature connector小型矩形插头座rectangular fin tube economizer鳍片管省煤器rectangular steel tube concrete矩形钢管混凝土rectangular interference ripple矩形干扰波痕rectangular sedimentation tanks平流式沉淀池