短語詞組短語instantaneous velocity center method 速度瞬心法the instantaneous velocity center method 瞬心法particle for instantaneous velocity center 瞬心質點instantaneous center of velocity 速度瞬心;速率瞬心;瞬時速度中心velocity instantaneous center method 同速點法Velocity Instantaneous Center 同速點instantaneous center of relative velocity 相對速度瞬心instantaneous center of absolute velocity 絕對速度瞬心 返回 instantaneous velocity center