The application mannered null rivers which use the mat for the vegetation and the mat for its

摘要

PROBLEM TO BE SOLVED: To provide a vegetation mat which is lightweight, low in cost, and has sucking prevention effect and is capable of withstanding a rapid running water without being peeled off.;SOLUTION: A lightweight anti-corrosive sheet of having the sucking prevention effect is mounted as one united body.;COPYRIGHT: (C)2002,JPO