土木方面一句话? Definition: invert -- lowest point of the internal surface of the barrel of a pipe or channel at any cross section (EN 476) --- inside bottom of pipe 管子内底 with non-porous invert extruded for the full length of the pipe无孔预制混凝土管……沿管子全长有挤压成型的无孔内底查看更多3个回答 . 2人已关注