It is also called a composite bow, where parts are strengthened by covering them with leather or metal to withstand the stress of movement and to provide more force in propelling the arrow by using a tendon of animal for the bow string, adding tonicity.
-合成弓ともいい、モーメント応力を考え強度が必要な箇所を革や金属などで被い補強したものや、動物の腱を使い緊張力を付加する事により反発力を高めた弓。