机械创新设计 在目前的家庭运动器材市场上，哑铃是颇受人们青睐的运动器材之一。但有的人偏好杆铃，我的设计是在哑铃的基础上的进一步改进，使之可以在人们需要时，改装成杆铃，满足喜爱较大强度的健身需求。便于人们饭后休闲娱乐健身。-Creative design in the current home exercise equipment on the market, dumbbell is one of the popular people popular sports equipment. But some people prefer lever bell, my design is a further improvement in the dumbbell so that when people need to be converted into the barbell to meet the love of the fitness needs of the greater strength. Easier for people to after dinner entertainment fitness.