板材14を組み上げて正多角柱状の外筒を形成するにあたり、正多角柱状の組立用治具18を底板12の上に載せ、組立用治具18の側面のガイド面19に沿わせて板材14を並べて正多角柱状の型材となる外筒を組み上げる。例文帳に追加 When forming a right polygonal pillar-like outer cylinder by setting up a plate material 14, a right polygonal pillar-like jig 18 for assembly is mounted on a bottom plate 12 and the plate material 14 is arranged along a guide face 19 on the side face of the jig 18 for assembly, and the out