the utility model relates to a fishing rod. a vertical rod is provided with a connecting mechanism of the fishing rod. the fishing rod and the vertical rod form a separable structure.
一种钓鱼桿,竖桿上设置有钓桿连接机构,钓桿与竖桿构成可分离结构;
sa (spectral acceleration) is approximately what is experienced by a building, as modeled by a particle on a massless vertical rod having the same natural frequency of vibration as the building.