GMM (Giant Magnetostrictive Material) is a new type of function material appearing in recent years with giant strain, fast response speed, high energy density and large output force and so on.

• 超磁致伸缩材料(Giant Magnetostrictive Material,简写为GMM)是近年才出现的一种新型功能材料,具有应变大、响应速度快、能量传输密度高、输出力大等优异性能。